18666256

素因数分解:

$2^4\times 7^2\times {\mathrm{29}}^1\times {\mathrm{821}}^1$

素因数の和:872

約数の個数: 60

約数和(自身を含む): 43574220

約数和(自身を除く): 24907964

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 29, 49, 56, 58, 98, 112, 116, 196, 203, 232, 392, 406, 464, 784, 812, 821, 1421, 1624, 1642, 2842, 3248, 3284, 5684, 5747, 6568, 11368, 11494, 13136, 22736, 22988, 23809, 40229, 45976, 47618, 80458, 91952, 95236, 160916, 166663, 190472, 321832, 333326, 380944, 643664, 666652, 1166641, 1333304, 2333282, 2666608, 4666564, 9333128, 18666256]

約数ペア:

[(1, 18666256), (2, 9333128), (4, 4666564), (7, 2666608), (8, 2333282), (14, 1333304), (16, 1166641), (28, 666652), (29, 643664), (49, 380944), (56, 333326), (58, 321832), (98, 190472), (112, 166663), (116, 160916), (196, 95236), (203, 91952), (232, 80458), (392, 47618), (406, 45976), (464, 40229), (784, 23809), (812, 22988), (821, 22736), (1421, 13136), (1624, 11494), (1642, 11368), (2842, 6568), (3248, 5747), (3284, 5684)]