20964216

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{331}}^1$

素因数の和:389

約数の個数: 128

約数和(自身を含む): 66931200

約数和(自身を除く): 45966984

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 13, 14, 21, 24, 26, 28, 29, 39, 42, 52, 56, 58, 78, 84, 87, 91, 104, 116, 156, 168, 174, 182, 203, 232, 273, 312, 331, 348, 364, 377, 406, 546, 609, 662, 696, 728, 754, 812, 993, 1092, 1131, 1218, 1324, 1508, 1624, 1986, 2184, 2262, 2317, 2436, 2639, 2648, 3016, 3972, 4303, 4524, 4634, 4872, 5278, 6951, 7917, 7944, 8606, 9048, 9268, 9599, 10556, 12909, 13902, 15834, 17212, 18536, 19198, 21112, 25818, 27804, 28797, 30121, 31668, 34424, 38396, 51636, 55608, 57594, 60242, 63336, 67193, 76792, 90363, 103272, 115188, 120484, 124787, 134386, 180726, 201579, 230376, 240968, 249574, 268772, 361452, 374361, 403158, 499148, 537544, 722904, 748722, 806316, 873509, 998296, 1497444, 1612632, 1747018, 2620527, 2994888, 3494036, 5241054, 6988072, 10482108, 20964216]

約数ペア:

[(1, 20964216), (2, 10482108), (3, 6988072), (4, 5241054), (6, 3494036), (7, 2994888), (8, 2620527), (12, 1747018), (13, 1612632), (14, 1497444), (21, 998296), (24, 873509), (26, 806316), (28, 748722), (29, 722904), (39, 537544), (42, 499148), (52, 403158), (56, 374361), (58, 361452), (78, 268772), (84, 249574), (87, 240968), (91, 230376), (104, 201579), (116, 180726), (156, 134386), (168, 124787), (174, 120484), (182, 115188), (203, 103272), (232, 90363), (273, 76792), (312, 67193), (331, 63336), (348, 60242), (364, 57594), (377, 55608), (406, 51636), (546, 38396), (609, 34424), (662, 31668), (696, 30121), (728, 28797), (754, 27804), (812, 25818), (993, 21112), (1092, 19198), (1131, 18536), (1218, 17212), (1324, 15834), (1508, 13902), (1624, 12909), (1986, 10556), (2184, 9599), (2262, 9268), (2317, 9048), (2436, 8606), (2639, 7944), (2648, 7917), (3016, 6951), (3972, 5278), (4303, 4872), (4524, 4634)]