18345640

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{101}}^1\times {\mathrm{239}}^1$

素因数の和:370

約数の個数: 64

約数和(自身を含む): 44064000

約数和(自身を除く): 25718360

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 101, 152, 190, 202, 239, 380, 404, 478, 505, 760, 808, 956, 1010, 1195, 1912, 1919, 2020, 2390, 3838, 4040, 4541, 4780, 7676, 9082, 9560, 9595, 15352, 18164, 19190, 22705, 24139, 36328, 38380, 45410, 48278, 76760, 90820, 96556, 120695, 181640, 193112, 241390, 458641, 482780, 917282, 965560, 1834564, 2293205, 3669128, 4586410, 9172820, 18345640]

約数ペア:

[(1, 18345640), (2, 9172820), (4, 4586410), (5, 3669128), (8, 2293205), (10, 1834564), (19, 965560), (20, 917282), (38, 482780), (40, 458641), (76, 241390), (95, 193112), (101, 181640), (152, 120695), (190, 96556), (202, 90820), (239, 76760), (380, 48278), (404, 45410), (478, 38380), (505, 36328), (760, 24139), (808, 22705), (956, 19190), (1010, 18164), (1195, 15352), (1912, 9595), (1919, 9560), (2020, 9082), (2390, 7676), (3838, 4780), (4040, 4541)]