18865515

素因数分解:

$3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{1399}}^1$

素因数の和:1467

約数の個数: 32

約数和(自身を含む): 32256000

約数和(自身を除く): 13390485

約数列:

[1, 3, 5, 15, 29, 31, 87, 93, 145, 155, 435, 465, 899, 1399, 2697, 4197, 4495, 6995, 13485, 20985, 40571, 43369, 121713, 130107, 202855, 216845, 608565, 650535, 1257701, 3773103, 6288505, 18865515]

約数ペア:

[(1, 18865515), (3, 6288505), (5, 3773103), (15, 1257701), (29, 650535), (31, 608565), (87, 216845), (93, 202855), (145, 130107), (155, 121713), (435, 43369), (465, 40571), (899, 20985), (1399, 13485), (2697, 6995), (4197, 4495)]