18879458

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{131}}^1\times {\mathrm{241}}^1$

素因数の和:410

約数の個数: 32

約数和(自身を含む): 32199552

約数和(自身を除く): 13320094

約数列:

[1, 2, 13, 23, 26, 46, 131, 241, 262, 299, 482, 598, 1703, 3013, 3133, 3406, 5543, 6026, 6266, 11086, 31571, 39169, 63142, 72059, 78338, 144118, 410423, 726133, 820846, 1452266, 9439729, 18879458]

約数ペア:

[(1, 18879458), (2, 9439729), (13, 1452266), (23, 820846), (26, 726133), (46, 410423), (131, 144118), (241, 78338), (262, 72059), (299, 63142), (482, 39169), (598, 31571), (1703, 11086), (3013, 6266), (3133, 6026), (3406, 5543)]