20974440

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{277}}^1\times {\mathrm{631}}^1$

素因数の和:922

約数の個数: 64

約数和(自身を含む): 63250560

約数和(自身を除く): 42276120

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 277, 554, 631, 831, 1108, 1262, 1385, 1662, 1893, 2216, 2524, 2770, 3155, 3324, 3786, 4155, 5048, 5540, 6310, 6648, 7572, 8310, 9465, 11080, 12620, 15144, 16620, 18930, 25240, 33240, 37860, 75720, 174787, 349574, 524361, 699148, 873935, 1048722, 1398296, 1747870, 2097444, 2621805, 3495740, 4194888, 5243610, 6991480, 10487220, 20974440]

約数ペア:

[(1, 20974440), (2, 10487220), (3, 6991480), (4, 5243610), (5, 4194888), (6, 3495740), (8, 2621805), (10, 2097444), (12, 1747870), (15, 1398296), (20, 1048722), (24, 873935), (30, 699148), (40, 524361), (60, 349574), (120, 174787), (277, 75720), (554, 37860), (631, 33240), (831, 25240), (1108, 18930), (1262, 16620), (1385, 15144), (1662, 12620), (1893, 11080), (2216, 9465), (2524, 8310), (2770, 7572), (3155, 6648), (3324, 6310), (3786, 5540), (4155, 5048)]