1997840

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{113}}^1$

素因数の和:156

約数の個数: 80

約数和(自身を含む): 5343408

約数和(自身を除く): 3345568

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 17, 20, 26, 34, 40, 52, 65, 68, 80, 85, 104, 113, 130, 136, 170, 208, 221, 226, 260, 272, 340, 442, 452, 520, 565, 680, 884, 904, 1040, 1105, 1130, 1360, 1469, 1768, 1808, 1921, 2210, 2260, 2938, 3536, 3842, 4420, 4520, 5876, 7345, 7684, 8840, 9040, 9605, 11752, 14690, 15368, 17680, 19210, 23504, 24973, 29380, 30736, 38420, 49946, 58760, 76840, 99892, 117520, 124865, 153680, 199784, 249730, 399568, 499460, 998920, 1997840]

約数ペア:

[(1, 1997840), (2, 998920), (4, 499460), (5, 399568), (8, 249730), (10, 199784), (13, 153680), (16, 124865), (17, 117520), (20, 99892), (26, 76840), (34, 58760), (40, 49946), (52, 38420), (65, 30736), (68, 29380), (80, 24973), (85, 23504), (104, 19210), (113, 17680), (130, 15368), (136, 14690), (170, 11752), (208, 9605), (221, 9040), (226, 8840), (260, 7684), (272, 7345), (340, 5876), (442, 4520), (452, 4420), (520, 3842), (565, 3536), (680, 2938), (884, 2260), (904, 2210), (1040, 1921), (1105, 1808), (1130, 1768), (1360, 1469)]