21877960

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{42073}}^1$

素因数の和:42097

約数の個数: 32

約数和(自身を含む): 53013240

約数和(自身を除く): 31135280

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 42073, 84146, 168292, 210365, 336584, 420730, 546949, 841460, 1093898, 1682920, 2187796, 2734745, 4375592, 5469490, 10938980, 21877960]

約数ペア:

[(1, 21877960), (2, 10938980), (4, 5469490), (5, 4375592), (8, 2734745), (10, 2187796), (13, 1682920), (20, 1093898), (26, 841460), (40, 546949), (52, 420730), (65, 336584), (104, 210365), (130, 168292), (260, 84146), (520, 42073)]