18873825

素因数分解:

$3^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{113}}^1\times {\mathrm{131}}^1$

素因数の和:274

約数の個数: 48

約数和(自身を含む): 33587136

約数和(自身を除く): 14713311

約数列:

[1, 3, 5, 15, 17, 25, 51, 75, 85, 113, 131, 255, 339, 393, 425, 565, 655, 1275, 1695, 1921, 1965, 2227, 2825, 3275, 5763, 6681, 8475, 9605, 9825, 11135, 14803, 28815, 33405, 44409, 48025, 55675, 74015, 144075, 167025, 222045, 251651, 370075, 754953, 1110225, 1258255, 3774765, 6291275, 18873825]

約数ペア:

[(1, 18873825), (3, 6291275), (5, 3774765), (15, 1258255), (17, 1110225), (25, 754953), (51, 370075), (75, 251651), (85, 222045), (113, 167025), (131, 144075), (255, 74015), (339, 55675), (393, 48025), (425, 44409), (565, 33405), (655, 28815), (1275, 14803), (1695, 11135), (1921, 9825), (1965, 9605), (2227, 8475), (2825, 6681), (3275, 5763)]