21290367075

素因数分解:

$3^1\times 5^2\times {\mathrm{71}}^1\times {\mathrm{3998191}}^1$

素因数の和:3998275

約数の個数: 24

約数和(自身を含む): 35695858176

約数和(自身を除く): 14405491101

約数列:

[1, 3, 5, 15, 25, 71, 75, 213, 355, 1065, 1775, 5325, 3998191, 11994573, 19990955, 59972865, 99954775, 283871561, 299864325, 851614683, 1419357805, 4258073415, 7096789025, 21290367075]

約数ペア:

[(1, 21290367075), (3, 7096789025), (5, 4258073415), (15, 1419357805), (25, 851614683), (71, 299864325), (75, 283871561), (213, 99954775), (355, 59972865), (1065, 19990955), (1775, 11994573), (5325, 3998191)]