20320128

素因数分解:

$2^7\times 3^2\times {\mathrm{31}}^1\times {\mathrm{569}}^1$

素因数の和:620

約数の個数: 96

約数和(自身を含む): 60465600

約数和(自身を除く): 40145472

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 31, 32, 36, 48, 62, 64, 72, 93, 96, 124, 128, 144, 186, 192, 248, 279, 288, 372, 384, 496, 558, 569, 576, 744, 992, 1116, 1138, 1152, 1488, 1707, 1984, 2232, 2276, 2976, 3414, 3968, 4464, 4552, 5121, 5952, 6828, 8928, 9104, 10242, 11904, 13656, 17639, 17856, 18208, 20484, 27312, 35278, 35712, 36416, 40968, 52917, 54624, 70556, 72832, 81936, 105834, 109248, 141112, 158751, 163872, 211668, 218496, 282224, 317502, 327744, 423336, 564448, 635004, 655488, 846672, 1128896, 1270008, 1693344, 2257792, 2540016, 3386688, 5080032, 6773376, 10160064, 20320128]

約数ペア:

[(1, 20320128), (2, 10160064), (3, 6773376), (4, 5080032), (6, 3386688), (8, 2540016), (9, 2257792), (12, 1693344), (16, 1270008), (18, 1128896), (24, 846672), (31, 655488), (32, 635004), (36, 564448), (48, 423336), (62, 327744), (64, 317502), (72, 282224), (93, 218496), (96, 211668), (124, 163872), (128, 158751), (144, 141112), (186, 109248), (192, 105834), (248, 81936), (279, 72832), (288, 70556), (372, 54624), (384, 52917), (496, 40968), (558, 36416), (569, 35712), (576, 35278), (744, 27312), (992, 20484), (1116, 18208), (1138, 17856), (1152, 17639), (1488, 13656), (1707, 11904), (1984, 10242), (2232, 9104), (2276, 8928), (2976, 6828), (3414, 5952), (3968, 5121), (4464, 4552)]