21638876

素因数分解:

$2^2\times 7^1\times {\mathrm{137}}^1\times {\mathrm{5641}}^1$

素因数の和:5789

約数の個数: 24

約数和(自身を含む): 43601376

約数和(自身を除く): 21962500

約数列:

[1, 2, 4, 7, 14, 28, 137, 274, 548, 959, 1918, 3836, 5641, 11282, 22564, 39487, 78974, 157948, 772817, 1545634, 3091268, 5409719, 10819438, 21638876]

約数ペア:

[(1, 21638876), (2, 10819438), (4, 5409719), (7, 3091268), (14, 1545634), (28, 772817), (137, 157948), (274, 78974), (548, 39487), (959, 22564), (1918, 11282), (3836, 5641)]