20995884

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{29}}^1$

素因数の和:89

約数の個数: 216

約数和(自身を含む): 71940960

約数和(自身を除く): 50945076

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 13, 14, 17, 18, 21, 26, 28, 29, 34, 36, 39, 42, 51, 52, 58, 63, 68, 78, 84, 87, 91, 102, 116, 117, 119, 126, 153, 156, 169, 174, 182, 203, 204, 221, 234, 238, 252, 261, 273, 306, 338, 348, 357, 364, 377, 406, 442, 468, 476, 493, 507, 522, 546, 609, 612, 663, 676, 714, 754, 812, 819, 884, 986, 1014, 1044, 1071, 1092, 1131, 1183, 1218, 1326, 1428, 1479, 1508, 1521, 1547, 1638, 1827, 1972, 1989, 2028, 2142, 2262, 2366, 2436, 2639, 2652, 2873, 2958, 3042, 3094, 3276, 3393, 3451, 3549, 3654, 3978, 4284, 4437, 4524, 4641, 4732, 4901, 5278, 5746, 5916, 6084, 6188, 6409, 6786, 6902, 7098, 7308, 7917, 7956, 8619, 8874, 9282, 9802, 10353, 10556, 10647, 11492, 12818, 13572, 13804, 13923, 14196, 14703, 15834, 17238, 17748, 18564, 19227, 19604, 20111, 20706, 21294, 23751, 25636, 25857, 27846, 29406, 31059, 31668, 34307, 34476, 38454, 40222, 41412, 42588, 44109, 44863, 47502, 51714, 55692, 57681, 58812, 60333, 62118, 68614, 76908, 80444, 83317, 88218, 89726, 95004, 102921, 103428, 115362, 120666, 124236, 134589, 137228, 166634, 176436, 179452, 180999, 205842, 230724, 241332, 249951, 269178, 308763, 333268, 361998, 403767, 411684, 499902, 538356, 583219, 617526, 723996, 749853, 807534, 999804, 1166438, 1235052, 1499706, 1615068, 1749657, 2332876, 2999412, 3499314, 5248971, 6998628, 10497942, 20995884]

約数ペア:

[(1, 20995884), (2, 10497942), (3, 6998628), (4, 5248971), (6, 3499314), (7, 2999412), (9, 2332876), (12, 1749657), (13, 1615068), (14, 1499706), (17, 1235052), (18, 1166438), (21, 999804), (26, 807534), (28, 749853), (29, 723996), (34, 617526), (36, 583219), (39, 538356), (42, 499902), (51, 411684), (52, 403767), (58, 361998), (63, 333268), (68, 308763), (78, 269178), (84, 249951), (87, 241332), (91, 230724), (102, 205842), (116, 180999), (117, 179452), (119, 176436), (126, 166634), (153, 137228), (156, 134589), (169, 124236), (174, 120666), (182, 115362), (203, 103428), (204, 102921), (221, 95004), (234, 89726), (238, 88218), (252, 83317), (261, 80444), (273, 76908), (306, 68614), (338, 62118), (348, 60333), (357, 58812), (364, 57681), (377, 55692), (406, 51714), (442, 47502), (468, 44863), (476, 44109), (493, 42588), (507, 41412), (522, 40222), (546, 38454), (609, 34476), (612, 34307), (663, 31668), (676, 31059), (714, 29406), (754, 27846), (812, 25857), (819, 25636), (884, 23751), (986, 21294), (1014, 20706), (1044, 20111), (1071, 19604), (1092, 19227), (1131, 18564), (1183, 17748), (1218, 17238), (1326, 15834), (1428, 14703), (1479, 14196), (1508, 13923), (1521, 13804), (1547, 13572), (1638, 12818), (1827, 11492), (1972, 10647), (1989, 10556), (2028, 10353), (2142, 9802), (2262, 9282), (2366, 8874), (2436, 8619), (2639, 7956), (2652, 7917), (2873, 7308), (2958, 7098), (3042, 6902), (3094, 6786), (3276, 6409), (3393, 6188), (3451, 6084), (3549, 5916), (3654, 5746), (3978, 5278), (4284, 4901), (4437, 4732), (4524, 4641)]