28776920

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{101}}^1\times {\mathrm{419}}^1$

素因数の和:548

約数の個数: 64

約数和(自身を含む): 69400800

約数和(自身を除く): 40623880

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 101, 136, 170, 202, 340, 404, 419, 505, 680, 808, 838, 1010, 1676, 1717, 2020, 2095, 3352, 3434, 4040, 4190, 6868, 7123, 8380, 8585, 13736, 14246, 16760, 17170, 28492, 34340, 35615, 42319, 56984, 68680, 71230, 84638, 142460, 169276, 211595, 284920, 338552, 423190, 719423, 846380, 1438846, 1692760, 2877692, 3597115, 5755384, 7194230, 14388460, 28776920]

約数ペア:

[(1, 28776920), (2, 14388460), (4, 7194230), (5, 5755384), (8, 3597115), (10, 2877692), (17, 1692760), (20, 1438846), (34, 846380), (40, 719423), (68, 423190), (85, 338552), (101, 284920), (136, 211595), (170, 169276), (202, 142460), (340, 84638), (404, 71230), (419, 68680), (505, 56984), (680, 42319), (808, 35615), (838, 34340), (1010, 28492), (1676, 17170), (1717, 16760), (2020, 14246), (2095, 13736), (3352, 8585), (3434, 8380), (4040, 7123), (4190, 6868)]