317720

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^2\times {\mathrm{47}}^1$

素因数の和:84

約数の個数: 48

約数和(自身を含む): 790560

約数和(自身を除く): 472840

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 47, 52, 65, 94, 104, 130, 169, 188, 235, 260, 338, 376, 470, 520, 611, 676, 845, 940, 1222, 1352, 1690, 1880, 2444, 3055, 3380, 4888, 6110, 6760, 7943, 12220, 15886, 24440, 31772, 39715, 63544, 79430, 158860, 317720]

約数ペア:

[(1, 317720), (2, 158860), (4, 79430), (5, 63544), (8, 39715), (10, 31772), (13, 24440), (20, 15886), (26, 12220), (40, 7943), (47, 6760), (52, 6110), (65, 4888), (94, 3380), (104, 3055), (130, 2444), (169, 1880), (188, 1690), (235, 1352), (260, 1222), (338, 940), (376, 845), (470, 676), (520, 611)]