20125575

素因数分解:

$3^2\times 5^2\times {\mathrm{23}}^1\times {\mathrm{3889}}^1$

素因数の和:3928

約数の個数: 36

約数和(自身を含む): 37624080

約数和(自身を除く): 17498505

約数列:

[1, 3, 5, 9, 15, 23, 25, 45, 69, 75, 115, 207, 225, 345, 575, 1035, 1725, 3889, 5175, 11667, 19445, 35001, 58335, 89447, 97225, 175005, 268341, 291675, 447235, 805023, 875025, 1341705, 2236175, 4025115, 6708525, 20125575]

約数ペア:

[(1, 20125575), (3, 6708525), (5, 4025115), (9, 2236175), (15, 1341705), (23, 875025), (25, 805023), (45, 447235), (69, 291675), (75, 268341), (115, 175005), (207, 97225), (225, 89447), (345, 58335), (575, 35001), (1035, 19445), (1725, 11667), (3889, 5175)]