20781404420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{937}}^1\times {\mathrm{158419}}^1$

素因数の和:159372

約数の個数: 48

約数和(自身を含む): 49928914560

約数和(自身を除く): 29147510140

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 937, 1874, 3748, 4685, 6559, 9370, 13118, 18740, 26236, 32795, 65590, 131180, 158419, 316838, 633676, 792095, 1108933, 1584190, 2217866, 3168380, 4435732, 5544665, 11089330, 22178660, 148438603, 296877206, 593754412, 742193015, 1039070221, 1484386030, 2078140442, 2968772060, 4156280884, 5195351105, 10390702210, 20781404420]

約数ペア:

[(1, 20781404420), (2, 10390702210), (4, 5195351105), (5, 4156280884), (7, 2968772060), (10, 2078140442), (14, 1484386030), (20, 1039070221), (28, 742193015), (35, 593754412), (70, 296877206), (140, 148438603), (937, 22178660), (1874, 11089330), (3748, 5544665), (4685, 4435732), (6559, 3168380), (9370, 2217866), (13118, 1584190), (18740, 1108933), (26236, 792095), (32795, 633676), (65590, 316838), (131180, 158419)]