28701040

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{163}}^1$

素因数の和:278

約数の個数: 80

約数和(自身を含む): 70281216

約数和(自身を除く): 41580176

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 71, 80, 124, 142, 155, 163, 248, 284, 310, 326, 355, 496, 568, 620, 652, 710, 815, 1136, 1240, 1304, 1420, 1630, 2201, 2480, 2608, 2840, 3260, 4402, 5053, 5680, 6520, 8804, 10106, 11005, 11573, 13040, 17608, 20212, 22010, 23146, 25265, 35216, 40424, 44020, 46292, 50530, 57865, 80848, 88040, 92584, 101060, 115730, 176080, 185168, 202120, 231460, 358763, 404240, 462920, 717526, 925840, 1435052, 1793815, 2870104, 3587630, 5740208, 7175260, 14350520, 28701040]

約数ペア:

[(1, 28701040), (2, 14350520), (4, 7175260), (5, 5740208), (8, 3587630), (10, 2870104), (16, 1793815), (20, 1435052), (31, 925840), (40, 717526), (62, 462920), (71, 404240), (80, 358763), (124, 231460), (142, 202120), (155, 185168), (163, 176080), (248, 115730), (284, 101060), (310, 92584), (326, 88040), (355, 80848), (496, 57865), (568, 50530), (620, 46292), (652, 44020), (710, 40424), (815, 35216), (1136, 25265), (1240, 23146), (1304, 22010), (1420, 20212), (1630, 17608), (2201, 13040), (2480, 11573), (2608, 11005), (2840, 10106), (3260, 8804), (4402, 6520), (5053, 5680)]