18904375

素因数分解:

$5^4\times 7^1\times {\mathrm{29}}^1\times {\mathrm{149}}^1$

素因数の和:205

約数の個数: 40

約数和(自身を含む): 28116000

約数和(自身を除く): 9211625

約数列:

[1, 5, 7, 25, 29, 35, 125, 145, 149, 175, 203, 625, 725, 745, 875, 1015, 1043, 3625, 3725, 4321, 4375, 5075, 5215, 18125, 18625, 21605, 25375, 26075, 30247, 93125, 108025, 126875, 130375, 151235, 540125, 651875, 756175, 2700625, 3780875, 18904375]

約数ペア:

[(1, 18904375), (5, 3780875), (7, 2700625), (25, 756175), (29, 651875), (35, 540125), (125, 151235), (145, 130375), (149, 126875), (175, 108025), (203, 93125), (625, 30247), (725, 26075), (745, 25375), (875, 21605), (1015, 18625), (1043, 18125), (3625, 5215), (3725, 5075), (4321, 4375)]