18890775

素因数分解:

$3^2\times 5^2\times {\mathrm{113}}^1\times {\mathrm{743}}^1$

素因数の和:872

約数の個数: 36

約数和(自身を含む): 34180848

約数和(自身を除く): 15290073

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 113, 225, 339, 565, 743, 1017, 1695, 2229, 2825, 3715, 5085, 6687, 8475, 11145, 18575, 25425, 33435, 55725, 83959, 167175, 251877, 419795, 755631, 1259385, 2098975, 3778155, 6296925, 18890775]

約数ペア:

[(1, 18890775), (3, 6296925), (5, 3778155), (9, 2098975), (15, 1259385), (25, 755631), (45, 419795), (75, 251877), (113, 167175), (225, 83959), (339, 55725), (565, 33435), (743, 25425), (1017, 18575), (1695, 11145), (2229, 8475), (2825, 6687), (3715, 5085)]