20320790

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{113}}^1\times {\mathrm{367}}^1$

素因数の和:501

約数の個数: 48

約数和(自身を含む): 43042752

約数和(自身を除く): 22721962

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 113, 226, 245, 367, 490, 565, 734, 791, 1130, 1582, 1835, 2569, 3670, 3955, 5138, 5537, 7910, 11074, 12845, 17983, 25690, 27685, 35966, 41471, 55370, 82942, 89915, 179830, 207355, 290297, 414710, 580594, 1451485, 2032079, 2902970, 4064158, 10160395, 20320790]

約数ペア:

[(1, 20320790), (2, 10160395), (5, 4064158), (7, 2902970), (10, 2032079), (14, 1451485), (35, 580594), (49, 414710), (70, 290297), (98, 207355), (113, 179830), (226, 89915), (245, 82942), (367, 55370), (490, 41471), (565, 35966), (734, 27685), (791, 25690), (1130, 17983), (1582, 12845), (1835, 11074), (2569, 7910), (3670, 5537), (3955, 5138)]