128801988

素因数分解:

$2^2\times 3^4\times 7^3\times {\mathrm{19}}^1\times {\mathrm{61}}^1$

素因数の和:117

約数の個数: 240

約数和(自身を含む): 420112000

約数和(自身を除く): 291310012

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 19, 21, 27, 28, 36, 38, 42, 49, 54, 57, 61, 63, 76, 81, 84, 98, 108, 114, 122, 126, 133, 147, 162, 171, 183, 189, 196, 228, 244, 252, 266, 294, 324, 342, 343, 366, 378, 399, 427, 441, 513, 532, 549, 567, 588, 684, 686, 732, 756, 798, 854, 882, 931, 1026, 1029, 1098, 1134, 1159, 1197, 1281, 1323, 1372, 1539, 1596, 1647, 1708, 1764, 1862, 2052, 2058, 2196, 2268, 2318, 2394, 2562, 2646, 2793, 2989, 3078, 3087, 3294, 3477, 3591, 3724, 3843, 3969, 4116, 4636, 4788, 4941, 5124, 5292, 5586, 5978, 6156, 6174, 6517, 6588, 6954, 7182, 7686, 7938, 8113, 8379, 8967, 9261, 9882, 10431, 10773, 11172, 11529, 11956, 12348, 13034, 13908, 14364, 15372, 15876, 16226, 16758, 17934, 18522, 19551, 19764, 20862, 20923, 21546, 23058, 24339, 25137, 26068, 26901, 27783, 31293, 32452, 33516, 34587, 35868, 37044, 39102, 41724, 41846, 43092, 46116, 48678, 50274, 53802, 55566, 56791, 58653, 62586, 62769, 69174, 73017, 75411, 78204, 80703, 83692, 93879, 97356, 100548, 107604, 111132, 113582, 117306, 125172, 125538, 138348, 146034, 150822, 161406, 170373, 175959, 187758, 188307, 219051, 227164, 234612, 242109, 251076, 292068, 301644, 322812, 340746, 351918, 375516, 376614, 397537, 438102, 484218, 511119, 527877, 564921, 657153, 681492, 703836, 753228, 795074, 876204, 968436, 1022238, 1055754, 1129842, 1192611, 1314306, 1533357, 1590148, 1694763, 2044476, 2111508, 2259684, 2385222, 2628612, 3066714, 3389526, 3577833, 4600071, 4770444, 6133428, 6779052, 7155666, 9200142, 10733499, 14311332, 18400284, 21466998, 32200497, 42933996, 64400994, 128801988]

約数ペア:

[(1, 128801988), (2, 64400994), (3, 42933996), (4, 32200497), (6, 21466998), (7, 18400284), (9, 14311332), (12, 10733499), (14, 9200142), (18, 7155666), (19, 6779052), (21, 6133428), (27, 4770444), (28, 4600071), (36, 3577833), (38, 3389526), (42, 3066714), (49, 2628612), (54, 2385222), (57, 2259684), (61, 2111508), (63, 2044476), (76, 1694763), (81, 1590148), (84, 1533357), (98, 1314306), (108, 1192611), (114, 1129842), (122, 1055754), (126, 1022238), (133, 968436), (147, 876204), (162, 795074), (171, 753228), (183, 703836), (189, 681492), (196, 657153), (228, 564921), (244, 527877), (252, 511119), (266, 484218), (294, 438102), (324, 397537), (342, 376614), (343, 375516), (366, 351918), (378, 340746), (399, 322812), (427, 301644), (441, 292068), (513, 251076), (532, 242109), (549, 234612), (567, 227164), (588, 219051), (684, 188307), (686, 187758), (732, 175959), (756, 170373), (798, 161406), (854, 150822), (882, 146034), (931, 138348), (1026, 125538), (1029, 125172), (1098, 117306), (1134, 113582), (1159, 111132), (1197, 107604), (1281, 100548), (1323, 97356), (1372, 93879), (1539, 83692), (1596, 80703), (1647, 78204), (1708, 75411), (1764, 73017), (1862, 69174), (2052, 62769), (2058, 62586), (2196, 58653), (2268, 56791), (2318, 55566), (2394, 53802), (2562, 50274), (2646, 48678), (2793, 46116), (2989, 43092), (3078, 41846), (3087, 41724), (3294, 39102), (3477, 37044), (3591, 35868), (3724, 34587), (3843, 33516), (3969, 32452), (4116, 31293), (4636, 27783), (4788, 26901), (4941, 26068), (5124, 25137), (5292, 24339), (5586, 23058), (5978, 21546), (6156, 20923), (6174, 20862), (6517, 19764), (6588, 19551), (6954, 18522), (7182, 17934), (7686, 16758), (7938, 16226), (8113, 15876), (8379, 15372), (8967, 14364), (9261, 13908), (9882, 13034), (10431, 12348), (10773, 11956), (11172, 11529)]