81937405

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{881}}^1$

素因数の和:1005

約数の個数: 32

約数和(自身を含む): 114307200

約数和(自身を除く): 32369795

約数列:

[1, 5, 11, 19, 55, 89, 95, 209, 445, 881, 979, 1045, 1691, 4405, 4895, 8455, 9691, 16739, 18601, 48455, 78409, 83695, 93005, 184129, 392045, 862499, 920645, 1489771, 4312495, 7448855, 16387481, 81937405]

約数ペア:

[(1, 81937405), (5, 16387481), (11, 7448855), (19, 4312495), (55, 1489771), (89, 920645), (95, 862499), (209, 392045), (445, 184129), (881, 93005), (979, 83695), (1045, 78409), (1691, 48455), (4405, 18601), (4895, 16739), (8455, 9691)]