28749040

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{21139}}^1$

素因数の和:21169

約数の個数: 40

約数和(自身を含む): 70776720

約数和(自身を除く): 42027680

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 21139, 42278, 84556, 105695, 169112, 211390, 338224, 359363, 422780, 718726, 845560, 1437452, 1691120, 1796815, 2874904, 3593630, 5749808, 7187260, 14374520, 28749040]

約数ペア:

[(1, 28749040), (2, 14374520), (4, 7187260), (5, 5749808), (8, 3593630), (10, 2874904), (16, 1796815), (17, 1691120), (20, 1437452), (34, 845560), (40, 718726), (68, 422780), (80, 359363), (85, 338224), (136, 211390), (170, 169112), (272, 105695), (340, 84556), (680, 42278), (1360, 21139)]