19955375

素因数分解:

$5^3\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{631}}^1$

素因数の和:680

約数の個数: 32

約数和(自身を含む): 28394496

約数和(自身を除く): 8439121

約数列:

[1, 5, 11, 23, 25, 55, 115, 125, 253, 275, 575, 631, 1265, 1375, 2875, 3155, 6325, 6941, 14513, 15775, 31625, 34705, 72565, 78875, 159643, 173525, 362825, 798215, 867625, 1814125, 3991075, 19955375]

約数ペア:

[(1, 19955375), (5, 3991075), (11, 1814125), (23, 867625), (25, 798215), (55, 362825), (115, 173525), (125, 159643), (253, 78875), (275, 72565), (575, 34705), (631, 31625), (1265, 15775), (1375, 14513), (2875, 6941), (3155, 6325)]