21872440

素因数分解:

$2^3\times 5^1\times {\mathrm{313}}^1\times {\mathrm{1747}}^1$

素因数の和:2071

約数の個数: 32

約数和(自身を含む): 49398480

約数和(自身を除く): 27526040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 313, 626, 1252, 1565, 1747, 2504, 3130, 3494, 6260, 6988, 8735, 12520, 13976, 17470, 34940, 69880, 546811, 1093622, 2187244, 2734055, 4374488, 5468110, 10936220, 21872440]

約数ペア:

[(1, 21872440), (2, 10936220), (4, 5468110), (5, 4374488), (8, 2734055), (10, 2187244), (20, 1093622), (40, 546811), (313, 69880), (626, 34940), (1252, 17470), (1565, 13976), (1747, 12520), (2504, 8735), (3130, 6988), (3494, 6260)]