20165620

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{11329}}^1$

素因数の和:11427

約数の個数: 24

約数和(自身を含む): 42827400

約数和(自身を除く): 22661780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 11329, 22658, 45316, 56645, 113290, 226580, 1008281, 2016562, 4033124, 5041405, 10082810, 20165620]

約数ペア:

[(1, 20165620), (2, 10082810), (4, 5041405), (5, 4033124), (10, 2016562), (20, 1008281), (89, 226580), (178, 113290), (356, 56645), (445, 45316), (890, 22658), (1780, 11329)]