18130815

素因数分解:

$3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{317}}^1$

素因数の和:400

約数の個数: 48

約数和(自身を含む): 33336576

約数和(自身を除く): 15205761

約数列:

[1, 3, 5, 9, 15, 31, 41, 45, 93, 123, 155, 205, 279, 317, 369, 465, 615, 951, 1271, 1395, 1585, 1845, 2853, 3813, 4755, 6355, 9827, 11439, 12997, 14265, 19065, 29481, 38991, 49135, 57195, 64985, 88443, 116973, 147405, 194955, 402907, 442215, 584865, 1208721, 2014535, 3626163, 6043605, 18130815]

約数ペア:

[(1, 18130815), (3, 6043605), (5, 3626163), (9, 2014535), (15, 1208721), (31, 584865), (41, 442215), (45, 402907), (93, 194955), (123, 147405), (155, 116973), (205, 88443), (279, 64985), (317, 57195), (369, 49135), (465, 38991), (615, 29481), (951, 19065), (1271, 14265), (1395, 12997), (1585, 11439), (1845, 9827), (2853, 6355), (3813, 4755)]