18390405

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{227}}^1\times {\mathrm{491}}^1$

素因数の和:737

約数の個数: 32

約数和(自身を含む): 32306688

約数和(自身を除く): 13916283

約数列:

[1, 3, 5, 11, 15, 33, 55, 165, 227, 491, 681, 1135, 1473, 2455, 2497, 3405, 5401, 7365, 7491, 12485, 16203, 27005, 37455, 81015, 111457, 334371, 557285, 1226027, 1671855, 3678081, 6130135, 18390405]

約数ペア:

[(1, 18390405), (3, 6130135), (5, 3678081), (11, 1671855), (15, 1226027), (33, 557285), (55, 334371), (165, 111457), (227, 81015), (491, 37455), (681, 27005), (1135, 16203), (1473, 12485), (2455, 7491), (2497, 7365), (3405, 5401)]