198691820

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{463}}^1\times {\mathrm{499}}^1$

素因数の和:1014

約数の個数: 48

約数和(自身を含む): 428736000

約数和(自身を除く): 230044180

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 463, 499, 860, 926, 998, 1852, 1996, 2315, 2495, 4630, 4990, 9260, 9980, 19909, 21457, 39818, 42914, 79636, 85828, 99545, 107285, 199090, 214570, 231037, 398180, 429140, 462074, 924148, 1155185, 2310370, 4620740, 9934591, 19869182, 39738364, 49672955, 99345910, 198691820]

約数ペア:

[(1, 198691820), (2, 99345910), (4, 49672955), (5, 39738364), (10, 19869182), (20, 9934591), (43, 4620740), (86, 2310370), (172, 1155185), (215, 924148), (430, 462074), (463, 429140), (499, 398180), (860, 231037), (926, 214570), (998, 199090), (1852, 107285), (1996, 99545), (2315, 85828), (2495, 79636), (4630, 42914), (4990, 39818), (9260, 21457), (9980, 19909)]