398697160

素因数分解:

$2^3\times 5^1\times {\mathrm{97}}^1\times {\mathrm{211}}^1\times {\mathrm{487}}^1$

素因数の和:806

約数の個数: 64

約数和(自身を含む): 912481920

約数和(自身を除く): 513784760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 97, 194, 211, 388, 422, 485, 487, 776, 844, 970, 974, 1055, 1688, 1940, 1948, 2110, 2435, 3880, 3896, 4220, 4870, 8440, 9740, 19480, 20467, 40934, 47239, 81868, 94478, 102335, 102757, 163736, 188956, 204670, 205514, 236195, 377912, 409340, 411028, 472390, 513785, 818680, 822056, 944780, 1027570, 1889560, 2055140, 4110280, 9967429, 19934858, 39869716, 49837145, 79739432, 99674290, 199348580, 398697160]

約数ペア:

[(1, 398697160), (2, 199348580), (4, 99674290), (5, 79739432), (8, 49837145), (10, 39869716), (20, 19934858), (40, 9967429), (97, 4110280), (194, 2055140), (211, 1889560), (388, 1027570), (422, 944780), (485, 822056), (487, 818680), (776, 513785), (844, 472390), (970, 411028), (974, 409340), (1055, 377912), (1688, 236195), (1940, 205514), (1948, 204670), (2110, 188956), (2435, 163736), (3880, 102757), (3896, 102335), (4220, 94478), (4870, 81868), (8440, 47239), (9740, 40934), (19480, 20467)]