645504040

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{241}}^1\times {\mathrm{2309}}^1$

素因数の和:2590

約数の個数: 64

約数和(自身を含む): 1509354000

約数和(自身を除く): 863849960

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 116, 145, 232, 241, 290, 482, 580, 964, 1160, 1205, 1928, 2309, 2410, 4618, 4820, 6989, 9236, 9640, 11545, 13978, 18472, 23090, 27956, 34945, 46180, 55912, 66961, 69890, 92360, 133922, 139780, 267844, 279560, 334805, 535688, 556469, 669610, 1112938, 1339220, 2225876, 2678440, 2782345, 4451752, 5564690, 11129380, 16137601, 22258760, 32275202, 64550404, 80688005, 129100808, 161376010, 322752020, 645504040]

約数ペア:

[(1, 645504040), (2, 322752020), (4, 161376010), (5, 129100808), (8, 80688005), (10, 64550404), (20, 32275202), (29, 22258760), (40, 16137601), (58, 11129380), (116, 5564690), (145, 4451752), (232, 2782345), (241, 2678440), (290, 2225876), (482, 1339220), (580, 1112938), (964, 669610), (1160, 556469), (1205, 535688), (1928, 334805), (2309, 279560), (2410, 267844), (4618, 139780), (4820, 133922), (6989, 92360), (9236, 69890), (9640, 66961), (11545, 55912), (13978, 46180), (18472, 34945), (23090, 27956)]