18431960

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{11239}}^1$

素因数の和:11291

約数の個数: 32

約数和(自身を含む): 42487200

約数和(自身を除く): 24055240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 11239, 22478, 44956, 56195, 89912, 112390, 224780, 449560, 460799, 921598, 1843196, 2303995, 3686392, 4607990, 9215980, 18431960]

約数ペア:

[(1, 18431960), (2, 9215980), (4, 4607990), (5, 3686392), (8, 2303995), (10, 1843196), (20, 921598), (40, 460799), (41, 449560), (82, 224780), (164, 112390), (205, 89912), (328, 56195), (410, 44956), (820, 22478), (1640, 11239)]