18791890

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{4663}}^1$

素因数の和:4714

約数の個数: 32

約数和(自身を含む): 37610496

約数和(自身を除く): 18818606

約数列:

[1, 2, 5, 10, 13, 26, 31, 62, 65, 130, 155, 310, 403, 806, 2015, 4030, 4663, 9326, 23315, 46630, 60619, 121238, 144553, 289106, 303095, 606190, 722765, 1445530, 1879189, 3758378, 9395945, 18791890]

約数ペア:

[(1, 18791890), (2, 9395945), (5, 3758378), (10, 1879189), (13, 1445530), (26, 722765), (31, 606190), (62, 303095), (65, 289106), (130, 144553), (155, 121238), (310, 60619), (403, 46630), (806, 23315), (2015, 9326), (4030, 4663)]