21631025

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{113}}^1$

素因数の和:186

約数の個数: 48

約数和(自身を含む): 31664640

約数和(自身を除く): 10033615

約数列:

[1, 5, 13, 19, 25, 31, 65, 95, 113, 155, 247, 325, 403, 475, 565, 589, 775, 1235, 1469, 2015, 2147, 2825, 2945, 3503, 6175, 7345, 7657, 10075, 10735, 14725, 17515, 27911, 36725, 38285, 45539, 53675, 66557, 87575, 139555, 191425, 227695, 332785, 697775, 865241, 1138475, 1663925, 4326205, 21631025]

約数ペア:

[(1, 21631025), (5, 4326205), (13, 1663925), (19, 1138475), (25, 865241), (31, 697775), (65, 332785), (95, 227695), (113, 191425), (155, 139555), (247, 87575), (325, 66557), (403, 53675), (475, 45539), (565, 38285), (589, 36725), (775, 27911), (1235, 17515), (1469, 14725), (2015, 10735), (2147, 10075), (2825, 7657), (2945, 7345), (3503, 6175)]