20223125

素因数分解:

$5^4\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{131}}^1$

素因数の和:183

約数の個数: 40

約数和(自身を含む): 28865760

約数和(自身を除く): 8642635

約数列:

[1, 5, 13, 19, 25, 65, 95, 125, 131, 247, 325, 475, 625, 655, 1235, 1625, 1703, 2375, 2489, 3275, 6175, 8125, 8515, 11875, 12445, 16375, 30875, 32357, 42575, 62225, 81875, 154375, 161785, 212875, 311125, 808925, 1064375, 1555625, 4044625, 20223125]

約数ペア:

[(1, 20223125), (5, 4044625), (13, 1555625), (19, 1064375), (25, 808925), (65, 311125), (95, 212875), (125, 161785), (131, 154375), (247, 81875), (325, 62225), (475, 42575), (625, 32357), (655, 30875), (1235, 16375), (1625, 12445), (1703, 11875), (2375, 8515), (2489, 8125), (3275, 6175)]