21374220

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{50891}}^1$

素因数の和:50910

約数の個数: 48

約数和(自身を含む): 68398848

約数和(自身を除く): 47024628

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, 50891, 101782, 152673, 203564, 254455, 305346, 356237, 508910, 610692, 712474, 763365, 1017820, 1068711, 1424948, 1526730, 1781185, 2137422, 3053460, 3562370, 4274844, 5343555, 7124740, 10687110, 21374220]

約数ペア:

[(1, 21374220), (2, 10687110), (3, 7124740), (4, 5343555), (5, 4274844), (6, 3562370), (7, 3053460), (10, 2137422), (12, 1781185), (14, 1526730), (15, 1424948), (20, 1068711), (21, 1017820), (28, 763365), (30, 712474), (35, 610692), (42, 508910), (60, 356237), (70, 305346), (84, 254455), (105, 203564), (140, 152673), (210, 101782), (420, 50891)]