25660020

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{647}}^1\times {\mathrm{661}}^1$

素因数の和:1320

約数の個数: 48

約数和(自身を含む): 72067968

約数和(自身を除く): 46407948

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 647, 661, 1294, 1322, 1941, 1983, 2588, 2644, 3235, 3305, 3882, 3966, 6470, 6610, 7764, 7932, 9705, 9915, 12940, 13220, 19410, 19830, 38820, 39660, 427667, 855334, 1283001, 1710668, 2138335, 2566002, 4276670, 5132004, 6415005, 8553340, 12830010, 25660020]

約数ペア:

[(1, 25660020), (2, 12830010), (3, 8553340), (4, 6415005), (5, 5132004), (6, 4276670), (10, 2566002), (12, 2138335), (15, 1710668), (20, 1283001), (30, 855334), (60, 427667), (647, 39660), (661, 38820), (1294, 19830), (1322, 19410), (1941, 13220), (1983, 12940), (2588, 9915), (2644, 9705), (3235, 7932), (3305, 7764), (3882, 6610), (3966, 6470)]