988892840

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1901717}}^1$

素因数の和:1901741

約数の個数: 32

約数和(自身を含む): 2396164680

約数和(自身を除く): 1407271840

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 1901717, 3803434, 7606868, 9508585, 15213736, 19017170, 24722321, 38034340, 49444642, 76068680, 98889284, 123611605, 197778568, 247223210, 494446420, 988892840]

約数ペア:

[(1, 988892840), (2, 494446420), (4, 247223210), (5, 197778568), (8, 123611605), (10, 98889284), (13, 76068680), (20, 49444642), (26, 38034340), (40, 24722321), (52, 19017170), (65, 15213736), (104, 9508585), (130, 7606868), (260, 3803434), (520, 1901717)]