21931492

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{113}}^1\times {\mathrm{401}}^1$

素因数の和:540

約数の個数: 36

約数和(自身を含む): 42665868

約数和(自身を除く): 20734376

約数列:

[1, 2, 4, 11, 22, 44, 113, 121, 226, 242, 401, 452, 484, 802, 1243, 1604, 2486, 4411, 4972, 8822, 13673, 17644, 27346, 45313, 48521, 54692, 90626, 97042, 181252, 194084, 498443, 996886, 1993772, 5482873, 10965746, 21931492]

約数ペア:

[(1, 21931492), (2, 10965746), (4, 5482873), (11, 1993772), (22, 996886), (44, 498443), (113, 194084), (121, 181252), (226, 97042), (242, 90626), (401, 54692), (452, 48521), (484, 45313), (802, 27346), (1243, 17644), (1604, 13673), (2486, 8822), (4411, 4972)]