20870556

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{367}}^1\times {\mathrm{677}}^1$

素因数の和:1058

約数の個数: 48

約数和(自身を含む): 55888896

約数和(自身を除く): 35018340

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 367, 677, 734, 1101, 1354, 1468, 2031, 2202, 2569, 2708, 4062, 4404, 4739, 5138, 7707, 8124, 9478, 10276, 14217, 15414, 18956, 28434, 30828, 56868, 248459, 496918, 745377, 993836, 1490754, 1739213, 2981508, 3478426, 5217639, 6956852, 10435278, 20870556]

約数ペア:

[(1, 20870556), (2, 10435278), (3, 6956852), (4, 5217639), (6, 3478426), (7, 2981508), (12, 1739213), (14, 1490754), (21, 993836), (28, 745377), (42, 496918), (84, 248459), (367, 56868), (677, 30828), (734, 28434), (1101, 18956), (1354, 15414), (1468, 14217), (2031, 10276), (2202, 9478), (2569, 8124), (2708, 7707), (4062, 5138), (4404, 4739)]