18390640

素因数分解:

$2^4\times 5^1\times {\mathrm{29}}^1\times {\mathrm{7927}}^1$

素因数の和:7969

約数の個数: 40

約数和(自身を含む): 44238240

約数和(自身を除く): 25847600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 40, 58, 80, 116, 145, 232, 290, 464, 580, 1160, 2320, 7927, 15854, 31708, 39635, 63416, 79270, 126832, 158540, 229883, 317080, 459766, 634160, 919532, 1149415, 1839064, 2298830, 3678128, 4597660, 9195320, 18390640]

約数ペア:

[(1, 18390640), (2, 9195320), (4, 4597660), (5, 3678128), (8, 2298830), (10, 1839064), (16, 1149415), (20, 919532), (29, 634160), (40, 459766), (58, 317080), (80, 229883), (116, 158540), (145, 126832), (232, 79270), (290, 63416), (464, 39635), (580, 31708), (1160, 15854), (2320, 7927)]