28130440

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{1151}}^1$

素因数の和:1222

約数の個数: 64

約数和(自身を含む): 69672960

約数和(自身を除く): 41542520

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 47, 52, 65, 94, 104, 130, 188, 235, 260, 376, 470, 520, 611, 940, 1151, 1222, 1880, 2302, 2444, 3055, 4604, 4888, 5755, 6110, 9208, 11510, 12220, 14963, 23020, 24440, 29926, 46040, 54097, 59852, 74815, 108194, 119704, 149630, 216388, 270485, 299260, 432776, 540970, 598520, 703261, 1081940, 1406522, 2163880, 2813044, 3516305, 5626088, 7032610, 14065220, 28130440]

約数ペア:

[(1, 28130440), (2, 14065220), (4, 7032610), (5, 5626088), (8, 3516305), (10, 2813044), (13, 2163880), (20, 1406522), (26, 1081940), (40, 703261), (47, 598520), (52, 540970), (65, 432776), (94, 299260), (104, 270485), (130, 216388), (188, 149630), (235, 119704), (260, 108194), (376, 74815), (470, 59852), (520, 54097), (611, 46040), (940, 29926), (1151, 24440), (1222, 23020), (1880, 14963), (2302, 12220), (2444, 11510), (3055, 9208), (4604, 6110), (4888, 5755)]