18180825

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{643}}^1$

素因数の和:698

約数の個数: 48

約数和(自身を含む): 33539520

約数和(自身を除く): 15358695

約数列:

[1, 3, 5, 13, 15, 25, 29, 39, 65, 75, 87, 145, 195, 325, 377, 435, 643, 725, 975, 1131, 1885, 1929, 2175, 3215, 5655, 8359, 9425, 9645, 16075, 18647, 25077, 28275, 41795, 48225, 55941, 93235, 125385, 208975, 242411, 279705, 466175, 626925, 727233, 1212055, 1398525, 3636165, 6060275, 18180825]

約数ペア:

[(1, 18180825), (3, 6060275), (5, 3636165), (13, 1398525), (15, 1212055), (25, 727233), (29, 626925), (39, 466175), (65, 279705), (75, 242411), (87, 208975), (145, 125385), (195, 93235), (325, 55941), (377, 48225), (435, 41795), (643, 28275), (725, 25077), (975, 18647), (1131, 16075), (1885, 9645), (1929, 9425), (2175, 8359), (3215, 5655)]