18874505

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1$

素因数の和:114

約数の個数: 64

約数和(自身を含む): 29030400

約数和(自身を除く): 10155895

約数列:

[1, 5, 13, 17, 19, 29, 31, 65, 85, 95, 145, 155, 221, 247, 323, 377, 403, 493, 527, 551, 589, 899, 1105, 1235, 1615, 1885, 2015, 2465, 2635, 2755, 2945, 4199, 4495, 6409, 6851, 7163, 7657, 9367, 10013, 11687, 15283, 17081, 20995, 32045, 34255, 35815, 38285, 46835, 50065, 58435, 76415, 85405, 121771, 130169, 198679, 222053, 290377, 608855, 650845, 993395, 1110265, 1451885, 3774901, 18874505]

約数ペア:

[(1, 18874505), (5, 3774901), (13, 1451885), (17, 1110265), (19, 993395), (29, 650845), (31, 608855), (65, 290377), (85, 222053), (95, 198679), (145, 130169), (155, 121771), (221, 85405), (247, 76415), (323, 58435), (377, 50065), (403, 46835), (493, 38285), (527, 35815), (551, 34255), (589, 32045), (899, 20995), (1105, 17081), (1235, 15283), (1615, 11687), (1885, 10013), (2015, 9367), (2465, 7657), (2635, 7163), (2755, 6851), (2945, 6409), (4199, 4495)]