21799700

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{409}}^1$

素因数の和:477

約数の個数: 72

約数和(自身を含む): 52314360

約数和(自身を除く): 30514660

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 41, 50, 52, 65, 82, 100, 130, 164, 205, 260, 325, 409, 410, 533, 650, 818, 820, 1025, 1066, 1300, 1636, 2045, 2050, 2132, 2665, 4090, 4100, 5317, 5330, 8180, 10225, 10634, 10660, 13325, 16769, 20450, 21268, 26585, 26650, 33538, 40900, 53170, 53300, 67076, 83845, 106340, 132925, 167690, 217997, 265850, 335380, 419225, 435994, 531700, 838450, 871988, 1089985, 1676900, 2179970, 4359940, 5449925, 10899850, 21799700]

約数ペア:

[(1, 21799700), (2, 10899850), (4, 5449925), (5, 4359940), (10, 2179970), (13, 1676900), (20, 1089985), (25, 871988), (26, 838450), (41, 531700), (50, 435994), (52, 419225), (65, 335380), (82, 265850), (100, 217997), (130, 167690), (164, 132925), (205, 106340), (260, 83845), (325, 67076), (409, 53300), (410, 53170), (533, 40900), (650, 33538), (818, 26650), (820, 26585), (1025, 21268), (1066, 20450), (1300, 16769), (1636, 13325), (2045, 10660), (2050, 10634), (2132, 10225), (2665, 8180), (4090, 5330), (4100, 5317)]