18905940

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{157}}^1\times {\mathrm{223}}^1$

素因数の和:398

約数の個数: 96

約数和(自身を含む): 59458560

約数和(自身を除く): 40552620

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 90, 108, 135, 157, 180, 223, 270, 314, 446, 471, 540, 628, 669, 785, 892, 942, 1115, 1338, 1413, 1570, 1884, 2007, 2230, 2355, 2676, 2826, 3140, 3345, 4014, 4239, 4460, 4710, 5652, 6021, 6690, 7065, 8028, 8478, 9420, 10035, 12042, 13380, 14130, 16956, 20070, 21195, 24084, 28260, 30105, 35011, 40140, 42390, 60210, 70022, 84780, 105033, 120420, 140044, 175055, 210066, 315099, 350110, 420132, 525165, 630198, 700220, 945297, 1050330, 1260396, 1575495, 1890594, 2100660, 3150990, 3781188, 4726485, 6301980, 9452970, 18905940]

約数ペア:

[(1, 18905940), (2, 9452970), (3, 6301980), (4, 4726485), (5, 3781188), (6, 3150990), (9, 2100660), (10, 1890594), (12, 1575495), (15, 1260396), (18, 1050330), (20, 945297), (27, 700220), (30, 630198), (36, 525165), (45, 420132), (54, 350110), (60, 315099), (90, 210066), (108, 175055), (135, 140044), (157, 120420), (180, 105033), (223, 84780), (270, 70022), (314, 60210), (446, 42390), (471, 40140), (540, 35011), (628, 30105), (669, 28260), (785, 24084), (892, 21195), (942, 20070), (1115, 16956), (1338, 14130), (1413, 13380), (1570, 12042), (1884, 10035), (2007, 9420), (2230, 8478), (2355, 8028), (2676, 7065), (2826, 6690), (3140, 6021), (3345, 5652), (4014, 4710), (4239, 4460)]