21573860

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{14009}}^1$

素因数の和:14036

約数の個数: 48

約数和(自身を含む): 56488320

約数和(自身を除く): 34914460

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 14009, 28018, 56036, 70045, 98063, 140090, 154099, 196126, 280180, 308198, 392252, 490315, 616396, 770495, 980630, 1078693, 1540990, 1961260, 2157386, 3081980, 4314772, 5393465, 10786930, 21573860]

約数ペア:

[(1, 21573860), (2, 10786930), (4, 5393465), (5, 4314772), (7, 3081980), (10, 2157386), (11, 1961260), (14, 1540990), (20, 1078693), (22, 980630), (28, 770495), (35, 616396), (44, 490315), (55, 392252), (70, 308198), (77, 280180), (110, 196126), (140, 154099), (154, 140090), (220, 98063), (308, 70045), (385, 56036), (770, 28018), (1540, 14009)]