20116280

素因数分解:

$2^3\times 5^1\times {\mathrm{631}}^1\times {\mathrm{797}}^1$

素因数の和:1439

約数の個数: 32

約数和(自身を含む): 45390240

約数和(自身を除く): 25273960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 631, 797, 1262, 1594, 2524, 3155, 3188, 3985, 5048, 6310, 6376, 7970, 12620, 15940, 25240, 31880, 502907, 1005814, 2011628, 2514535, 4023256, 5029070, 10058140, 20116280]

約数ペア:

[(1, 20116280), (2, 10058140), (4, 5029070), (5, 4023256), (8, 2514535), (10, 2011628), (20, 1005814), (40, 502907), (631, 31880), (797, 25240), (1262, 15940), (1594, 12620), (2524, 7970), (3155, 6376), (3188, 6310), (3985, 5048)]