20507340

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{157}}^1\times {\mathrm{311}}^1$

素因数の和:487

約数の個数: 96

約数和(自身を含む): 66253824

約数和(自身を除く): 45746484

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, 157, 210, 311, 314, 420, 471, 622, 628, 785, 933, 942, 1099, 1244, 1555, 1570, 1866, 1884, 2177, 2198, 2355, 3110, 3140, 3297, 3732, 4354, 4396, 4665, 4710, 5495, 6220, 6531, 6594, 8708, 9330, 9420, 10885, 10990, 13062, 13188, 16485, 18660, 21770, 21980, 26124, 32655, 32970, 43540, 48827, 65310, 65940, 97654, 130620, 146481, 195308, 244135, 292962, 341789, 488270, 585924, 683578, 732405, 976540, 1025367, 1367156, 1464810, 1708945, 2050734, 2929620, 3417890, 4101468, 5126835, 6835780, 10253670, 20507340]

約数ペア:

[(1, 20507340), (2, 10253670), (3, 6835780), (4, 5126835), (5, 4101468), (6, 3417890), (7, 2929620), (10, 2050734), (12, 1708945), (14, 1464810), (15, 1367156), (20, 1025367), (21, 976540), (28, 732405), (30, 683578), (35, 585924), (42, 488270), (60, 341789), (70, 292962), (84, 244135), (105, 195308), (140, 146481), (157, 130620), (210, 97654), (311, 65940), (314, 65310), (420, 48827), (471, 43540), (622, 32970), (628, 32655), (785, 26124), (933, 21980), (942, 21770), (1099, 18660), (1244, 16485), (1555, 13188), (1570, 13062), (1866, 10990), (1884, 10885), (2177, 9420), (2198, 9330), (2355, 8708), (3110, 6594), (3140, 6531), (3297, 6220), (3732, 5495), (4354, 4710), (4396, 4665)]