15560220

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19949}}^1$

素因数の和:19974

約数の個数: 48

約数和(自身を含む): 46922400

約数和(自身を除く): 31362180

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 19949, 39898, 59847, 79796, 99745, 119694, 199490, 239388, 259337, 299235, 398980, 518674, 598470, 778011, 1037348, 1196940, 1296685, 1556022, 2593370, 3112044, 3890055, 5186740, 7780110, 15560220]

約数ペア:

[(1, 15560220), (2, 7780110), (3, 5186740), (4, 3890055), (5, 3112044), (6, 2593370), (10, 1556022), (12, 1296685), (13, 1196940), (15, 1037348), (20, 778011), (26, 598470), (30, 518674), (39, 398980), (52, 299235), (60, 259337), (65, 239388), (78, 199490), (130, 119694), (156, 99745), (195, 79796), (260, 59847), (390, 39898), (780, 19949)]