18126875

素因数分解:

$5^4\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{97}}^1$

素因数の和:153

約数の個数: 40

約数和(自身を含む): 25716768

約数和(自身を除く): 7589893

約数列:

[1, 5, 13, 23, 25, 65, 97, 115, 125, 299, 325, 485, 575, 625, 1261, 1495, 1625, 2231, 2425, 2875, 6305, 7475, 8125, 11155, 12125, 14375, 29003, 31525, 37375, 55775, 60625, 145015, 157625, 186875, 278875, 725075, 788125, 1394375, 3625375, 18126875]

約数ペア:

[(1, 18126875), (5, 3625375), (13, 1394375), (23, 788125), (25, 725075), (65, 278875), (97, 186875), (115, 157625), (125, 145015), (299, 60625), (325, 55775), (485, 37375), (575, 31525), (625, 29003), (1261, 14375), (1495, 12125), (1625, 11155), (2231, 8125), (2425, 7475), (2875, 6305)]