18717320

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{101}}^1\times {\mathrm{113}}^1$

素因数の和:266

約数の個数: 64

約数和(自身を含む): 43953840

約数和(自身を除く): 25236520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 101, 113, 164, 202, 205, 226, 328, 404, 410, 452, 505, 565, 808, 820, 904, 1010, 1130, 1640, 2020, 2260, 4040, 4141, 4520, 4633, 8282, 9266, 11413, 16564, 18532, 20705, 22826, 23165, 33128, 37064, 41410, 45652, 46330, 57065, 82820, 91304, 92660, 114130, 165640, 185320, 228260, 456520, 467933, 935866, 1871732, 2339665, 3743464, 4679330, 9358660, 18717320]

約数ペア:

[(1, 18717320), (2, 9358660), (4, 4679330), (5, 3743464), (8, 2339665), (10, 1871732), (20, 935866), (40, 467933), (41, 456520), (82, 228260), (101, 185320), (113, 165640), (164, 114130), (202, 92660), (205, 91304), (226, 82820), (328, 57065), (404, 46330), (410, 45652), (452, 41410), (505, 37064), (565, 33128), (808, 23165), (820, 22826), (904, 20705), (1010, 18532), (1130, 16564), (1640, 11413), (2020, 9266), (2260, 8282), (4040, 4633), (4141, 4520)]