21177260

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{1733}}^1$

素因数の和:1802

約数の個数: 48

約数和(自身を含む): 48940416

約数和(自身を除く): 27763156

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 47, 52, 65, 94, 130, 188, 235, 260, 470, 611, 940, 1222, 1733, 2444, 3055, 3466, 6110, 6932, 8665, 12220, 17330, 22529, 34660, 45058, 81451, 90116, 112645, 162902, 225290, 325804, 407255, 450580, 814510, 1058863, 1629020, 2117726, 4235452, 5294315, 10588630, 21177260]

約数ペア:

[(1, 21177260), (2, 10588630), (4, 5294315), (5, 4235452), (10, 2117726), (13, 1629020), (20, 1058863), (26, 814510), (47, 450580), (52, 407255), (65, 325804), (94, 225290), (130, 162902), (188, 112645), (235, 90116), (260, 81451), (470, 45058), (611, 34660), (940, 22529), (1222, 17330), (1733, 12220), (2444, 8665), (3055, 6932), (3466, 6110)]