21120372

素因数分解:

$2^2\times 3^3\times 7^2\times {\mathrm{13}}^1\times {\mathrm{307}}^1$

素因数の和:347

約数の個数: 144

約数和(自身を含む): 68819520

約数和(自身を除く): 47699148

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 13, 14, 18, 21, 26, 27, 28, 36, 39, 42, 49, 52, 54, 63, 78, 84, 91, 98, 108, 117, 126, 147, 156, 182, 189, 196, 234, 252, 273, 294, 307, 351, 364, 378, 441, 468, 546, 588, 614, 637, 702, 756, 819, 882, 921, 1092, 1228, 1274, 1323, 1404, 1638, 1764, 1842, 1911, 2149, 2457, 2548, 2646, 2763, 3276, 3684, 3822, 3991, 4298, 4914, 5292, 5526, 5733, 6447, 7644, 7982, 8289, 8596, 9828, 11052, 11466, 11973, 12894, 15043, 15964, 16578, 17199, 19341, 22932, 23946, 25788, 27937, 30086, 33156, 34398, 35919, 38682, 45129, 47892, 55874, 58023, 60172, 68796, 71838, 77364, 83811, 90258, 107757, 111748, 116046, 135387, 143676, 167622, 180516, 195559, 215514, 232092, 251433, 270774, 335244, 391118, 406161, 431028, 502866, 541548, 586677, 754299, 782236, 812322, 1005732, 1173354, 1508598, 1624644, 1760031, 2346708, 3017196, 3520062, 5280093, 7040124, 10560186, 21120372]

約数ペア:

[(1, 21120372), (2, 10560186), (3, 7040124), (4, 5280093), (6, 3520062), (7, 3017196), (9, 2346708), (12, 1760031), (13, 1624644), (14, 1508598), (18, 1173354), (21, 1005732), (26, 812322), (27, 782236), (28, 754299), (36, 586677), (39, 541548), (42, 502866), (49, 431028), (52, 406161), (54, 391118), (63, 335244), (78, 270774), (84, 251433), (91, 232092), (98, 215514), (108, 195559), (117, 180516), (126, 167622), (147, 143676), (156, 135387), (182, 116046), (189, 111748), (196, 107757), (234, 90258), (252, 83811), (273, 77364), (294, 71838), (307, 68796), (351, 60172), (364, 58023), (378, 55874), (441, 47892), (468, 45129), (546, 38682), (588, 35919), (614, 34398), (637, 33156), (702, 30086), (756, 27937), (819, 25788), (882, 23946), (921, 22932), (1092, 19341), (1228, 17199), (1274, 16578), (1323, 15964), (1404, 15043), (1638, 12894), (1764, 11973), (1842, 11466), (1911, 11052), (2149, 9828), (2457, 8596), (2548, 8289), (2646, 7982), (2763, 7644), (3276, 6447), (3684, 5733), (3822, 5526), (3991, 5292), (4298, 4914)]