19846665

素因数分解:

$3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{347}}^1$

素因数の和:430

約数の個数: 48

約数和(自身を含む): 36481536

約数和(自身を除く): 16634871

約数列:

[1, 3, 5, 9, 15, 31, 41, 45, 93, 123, 155, 205, 279, 347, 369, 465, 615, 1041, 1271, 1395, 1735, 1845, 3123, 3813, 5205, 6355, 10757, 11439, 14227, 15615, 19065, 32271, 42681, 53785, 57195, 71135, 96813, 128043, 161355, 213405, 441037, 484065, 640215, 1323111, 2205185, 3969333, 6615555, 19846665]

約数ペア:

[(1, 19846665), (3, 6615555), (5, 3969333), (9, 2205185), (15, 1323111), (31, 640215), (41, 484065), (45, 441037), (93, 213405), (123, 161355), (155, 128043), (205, 96813), (279, 71135), (347, 57195), (369, 53785), (465, 42681), (615, 32271), (1041, 19065), (1271, 15615), (1395, 14227), (1735, 11439), (1845, 10757), (3123, 6355), (3813, 5205)]