212212515

素因数分解:

$3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{11131}}^1$

素因数の和:11211

約数の個数: 32

約数和(自身を含む): 359073792

約数和(自身を除く): 146861277

約数列:

[1, 3, 5, 15, 31, 41, 93, 123, 155, 205, 465, 615, 1271, 3813, 6355, 11131, 19065, 33393, 55655, 166965, 345061, 456371, 1035183, 1369113, 1725305, 2281855, 5175915, 6845565, 14147501, 42442503, 70737505, 212212515]

約数ペア:

[(1, 212212515), (3, 70737505), (5, 42442503), (15, 14147501), (31, 6845565), (41, 5175915), (93, 2281855), (123, 1725305), (155, 1369113), (205, 1035183), (465, 456371), (615, 345061), (1271, 166965), (3813, 55655), (6355, 33393), (11131, 19065)]