18968745

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^2\times {\mathrm{31}}^1\times {\mathrm{113}}^1$

素因数の和:190

約数の個数: 48

約数和(自身を含む): 33357312

約数和(自身を除く): 14388567

約数列:

[1, 3, 5, 15, 19, 31, 57, 93, 95, 113, 155, 285, 339, 361, 465, 565, 589, 1083, 1695, 1767, 1805, 2147, 2945, 3503, 5415, 6441, 8835, 10509, 10735, 11191, 17515, 32205, 33573, 40793, 52545, 55955, 66557, 122379, 167865, 199671, 203965, 332785, 611895, 998355, 1264583, 3793749, 6322915, 18968745]

約数ペア:

[(1, 18968745), (3, 6322915), (5, 3793749), (15, 1264583), (19, 998355), (31, 611895), (57, 332785), (93, 203965), (95, 199671), (113, 167865), (155, 122379), (285, 66557), (339, 55955), (361, 52545), (465, 40793), (565, 33573), (589, 32205), (1083, 17515), (1695, 11191), (1767, 10735), (1805, 10509), (2147, 8835), (2945, 6441), (3503, 5415)]