1001720

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{317}}^1$

素因数の和:407

約数の個数: 32

約数和(自身を含む): 2289600

約数和(自身を除く): 1287880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 158, 316, 317, 395, 632, 634, 790, 1268, 1580, 1585, 2536, 3160, 3170, 6340, 12680, 25043, 50086, 100172, 125215, 200344, 250430, 500860, 1001720]

約数ペア:

[(1, 1001720), (2, 500860), (4, 250430), (5, 200344), (8, 125215), (10, 100172), (20, 50086), (40, 25043), (79, 12680), (158, 6340), (316, 3170), (317, 3160), (395, 2536), (632, 1585), (634, 1580), (790, 1268)]