20787415

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{151}}^1\times {\mathrm{2503}}^1$

素因数の和:2670

約数の個数: 16

約数和(自身を含む): 27403776

約数和(自身を除く): 6616361

約数列:

[1, 5, 11, 55, 151, 755, 1661, 2503, 8305, 12515, 27533, 137665, 377953, 1889765, 4157483, 20787415]

約数ペア:

[(1, 20787415), (5, 4157483), (11, 1889765), (55, 377953), (151, 137665), (755, 27533), (1661, 12515), (2503, 8305)]