21888280

素因数分解:

$2^3\times 5^1\times {\mathrm{461}}^1\times {\mathrm{1187}}^1$

素因数の和:1659

約数の個数: 32

約数和(自身を含む): 49397040

約数和(自身を除く): 27508760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 461, 922, 1187, 1844, 2305, 2374, 3688, 4610, 4748, 5935, 9220, 9496, 11870, 18440, 23740, 47480, 547207, 1094414, 2188828, 2736035, 4377656, 5472070, 10944140, 21888280]

約数ペア:

[(1, 21888280), (2, 10944140), (4, 5472070), (5, 4377656), (8, 2736035), (10, 2188828), (20, 1094414), (40, 547207), (461, 47480), (922, 23740), (1187, 18440), (1844, 11870), (2305, 9496), (2374, 9220), (3688, 5935), (4610, 4748)]