621520

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{457}}^1$

素因数の和:487

約数の個数: 40

約数和(自身を含む): 1533384

約数和(自身を除く): 911864

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 457, 680, 914, 1360, 1828, 2285, 3656, 4570, 7312, 7769, 9140, 15538, 18280, 31076, 36560, 38845, 62152, 77690, 124304, 155380, 310760, 621520]

約数ペア:

[(1, 621520), (2, 310760), (4, 155380), (5, 124304), (8, 77690), (10, 62152), (16, 38845), (17, 36560), (20, 31076), (34, 18280), (40, 15538), (68, 9140), (80, 7769), (85, 7312), (136, 4570), (170, 3656), (272, 2285), (340, 1828), (457, 1360), (680, 914)]