21576880

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{20747}}^1$

素因数の和:20773

約数の個数: 40

約数和(自身を含む): 54027792

約数和(自身を除く): 32450912

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 20747, 41494, 82988, 103735, 165976, 207470, 269711, 331952, 414940, 539422, 829880, 1078844, 1348555, 1659760, 2157688, 2697110, 4315376, 5394220, 10788440, 21576880]

約数ペア:

[(1, 21576880), (2, 10788440), (4, 5394220), (5, 4315376), (8, 2697110), (10, 2157688), (13, 1659760), (16, 1348555), (20, 1078844), (26, 829880), (40, 539422), (52, 414940), (65, 331952), (80, 269711), (104, 207470), (130, 165976), (208, 103735), (260, 82988), (520, 41494), (1040, 20747)]