21817900

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^2\times {\mathrm{1291}}^1$

素因数の和:1331

約数の個数: 54

約数和(自身を含む): 51306612

約数和(自身を除く): 29488712

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 130, 169, 260, 325, 338, 650, 676, 845, 1291, 1300, 1690, 2582, 3380, 4225, 5164, 6455, 8450, 12910, 16783, 16900, 25820, 32275, 33566, 64550, 67132, 83915, 129100, 167830, 218179, 335660, 419575, 436358, 839150, 872716, 1090895, 1678300, 2181790, 4363580, 5454475, 10908950, 21817900]

約数ペア:

[(1, 21817900), (2, 10908950), (4, 5454475), (5, 4363580), (10, 2181790), (13, 1678300), (20, 1090895), (25, 872716), (26, 839150), (50, 436358), (52, 419575), (65, 335660), (100, 218179), (130, 167830), (169, 129100), (260, 83915), (325, 67132), (338, 64550), (650, 33566), (676, 32275), (845, 25820), (1291, 16900), (1300, 16783), (1690, 12910), (2582, 8450), (3380, 6455), (4225, 5164)]