31120440

素因数分解:

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

素因数の和:19976

約数の個数: 64

約数和(自身を含む): 100548000

約数和(自身を除く): 69427560

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 52, 60, 65, 78, 104, 120, 130, 156, 195, 260, 312, 390, 520, 780, 1560, 19949, 39898, 59847, 79796, 99745, 119694, 159592, 199490, 239388, 259337, 299235, 398980, 478776, 518674, 598470, 778011, 797960, 1037348, 1196940, 1296685, 1556022, 2074696, 2393880, 2593370, 3112044, 3890055, 5186740, 6224088, 7780110, 10373480, 15560220, 31120440]

約数ペア:

[(1, 31120440), (2, 15560220), (3, 10373480), (4, 7780110), (5, 6224088), (6, 5186740), (8, 3890055), (10, 3112044), (12, 2593370), (13, 2393880), (15, 2074696), (20, 1556022), (24, 1296685), (26, 1196940), (30, 1037348), (39, 797960), (40, 778011), (52, 598470), (60, 518674), (65, 478776), (78, 398980), (104, 299235), (120, 259337), (130, 239388), (156, 199490), (195, 159592), (260, 119694), (312, 99745), (390, 79796), (520, 59847), (780, 39898), (1560, 19949)]