20097975

素因数分解:

$3^1\times 5^2\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{191}}^1$

素因数の和:288

約数の個数: 48

約数和(自身を含む): 35426304

約数和(自身を除く): 15328329

約数列:

[1, 3, 5, 15, 23, 25, 61, 69, 75, 115, 183, 191, 305, 345, 573, 575, 915, 955, 1403, 1525, 1725, 2865, 4209, 4393, 4575, 4775, 7015, 11651, 13179, 14325, 21045, 21965, 34953, 35075, 58255, 65895, 105225, 109825, 174765, 267973, 291275, 329475, 803919, 873825, 1339865, 4019595, 6699325, 20097975]

約数ペア:

[(1, 20097975), (3, 6699325), (5, 4019595), (15, 1339865), (23, 873825), (25, 803919), (61, 329475), (69, 291275), (75, 267973), (115, 174765), (183, 109825), (191, 105225), (305, 65895), (345, 58255), (573, 35075), (575, 34953), (915, 21965), (955, 21045), (1403, 14325), (1525, 13179), (1725, 11651), (2865, 7015), (4209, 4775), (4393, 4575)]