20719020

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{49331}}^1$

素因数の和:49350

約数の個数: 48

約数和(自身を含む): 66302208

約数和(自身を除く): 45583188

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 49331, 98662, 147993, 197324, 246655, 295986, 345317, 493310, 591972, 690634, 739965, 986620, 1035951, 1381268, 1479930, 1726585, 2071902, 2959860, 3453170, 4143804, 5179755, 6906340, 10359510, 20719020]

約数ペア:

[(1, 20719020), (2, 10359510), (3, 6906340), (4, 5179755), (5, 4143804), (6, 3453170), (7, 2959860), (10, 2071902), (12, 1726585), (14, 1479930), (15, 1381268), (20, 1035951), (21, 986620), (28, 739965), (30, 690634), (35, 591972), (42, 493310), (60, 345317), (70, 295986), (84, 246655), (105, 197324), (140, 147993), (210, 98662), (420, 49331)]