18280875

素因数分解:

$3^1\times 5^3\times {\mathrm{29}}^1\times {\mathrm{41}}^2$

素因数の和:129

約数の個数: 48

約数和(自身を含む): 32254560

約数和(自身を除く): 13973685

約数列:

[1, 3, 5, 15, 25, 29, 41, 75, 87, 123, 125, 145, 205, 375, 435, 615, 725, 1025, 1189, 1681, 2175, 3075, 3567, 3625, 5043, 5125, 5945, 8405, 10875, 15375, 17835, 25215, 29725, 42025, 48749, 89175, 126075, 146247, 148625, 210125, 243745, 445875, 630375, 731235, 1218725, 3656175, 6093625, 18280875]

約数ペア:

[(1, 18280875), (3, 6093625), (5, 3656175), (15, 1218725), (25, 731235), (29, 630375), (41, 445875), (75, 243745), (87, 210125), (123, 148625), (125, 146247), (145, 126075), (205, 89175), (375, 48749), (435, 42025), (615, 29725), (725, 25215), (1025, 17835), (1189, 15375), (1681, 10875), (2175, 8405), (3075, 5945), (3567, 5125), (3625, 5043)]