18722168

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{101}}^1$

素因数の和:200

約数の個数: 64

約数和(自身を含む): 39657600

約数和(自身を除く): 20935432

約数列:

[1, 2, 4, 8, 17, 29, 34, 47, 58, 68, 94, 101, 116, 136, 188, 202, 232, 376, 404, 493, 799, 808, 986, 1363, 1598, 1717, 1972, 2726, 2929, 3196, 3434, 3944, 4747, 5452, 5858, 6392, 6868, 9494, 10904, 11716, 13736, 18988, 23171, 23432, 37976, 46342, 49793, 80699, 92684, 99586, 137663, 161398, 185368, 199172, 275326, 322796, 398344, 550652, 645592, 1101304, 2340271, 4680542, 9361084, 18722168]

約数ペア:

[(1, 18722168), (2, 9361084), (4, 4680542), (8, 2340271), (17, 1101304), (29, 645592), (34, 550652), (47, 398344), (58, 322796), (68, 275326), (94, 199172), (101, 185368), (116, 161398), (136, 137663), (188, 99586), (202, 92684), (232, 80699), (376, 49793), (404, 46342), (493, 37976), (799, 23432), (808, 23171), (986, 18988), (1363, 13736), (1598, 11716), (1717, 10904), (1972, 9494), (2726, 6868), (2929, 6392), (3196, 5858), (3434, 5452), (3944, 4747)]