18874995

素因数分解:

$3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{479}}^1$

素因数の和:595

約数の個数: 32

約数和(自身を含む): 31518720

約数和(自身を除く): 12643725

約数列:

[1, 3, 5, 15, 37, 71, 111, 185, 213, 355, 479, 555, 1065, 1437, 2395, 2627, 7185, 7881, 13135, 17723, 34009, 39405, 53169, 88615, 102027, 170045, 265845, 510135, 1258333, 3774999, 6291665, 18874995]

約数ペア:

[(1, 18874995), (3, 6291665), (5, 3774999), (15, 1258333), (37, 510135), (71, 265845), (111, 170045), (185, 102027), (213, 88615), (355, 53169), (479, 39405), (555, 34009), (1065, 17723), (1437, 13135), (2395, 7881), (2627, 7185)]