20125504975

素因数分解:

$5^2\times {\mathrm{41}}^1\times {\mathrm{4159}}^1\times {\mathrm{4721}}^1$

素因数の和:8931

約数の個数: 24

約数和(自身を含む): 25575863040

約数和(自身を除く): 5450358065

約数列:

[1, 5, 25, 41, 205, 1025, 4159, 4721, 20795, 23605, 103975, 118025, 170519, 193561, 852595, 967805, 4262975, 4839025, 19634639, 98173195, 490865975, 805020199, 4025100995, 20125504975]

約数ペア:

[(1, 20125504975), (5, 4025100995), (25, 805020199), (41, 490865975), (205, 98173195), (1025, 19634639), (4159, 4839025), (4721, 4262975), (20795, 967805), (23605, 852595), (103975, 193561), (118025, 170519)]