21618060

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{571}}^1\times {\mathrm{631}}^1$

素因数の和:1214

約数の個数: 48

約数和(自身を含む): 60732672

約数和(自身を除く): 39114612

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 571, 631, 1142, 1262, 1713, 1893, 2284, 2524, 2855, 3155, 3426, 3786, 5710, 6310, 6852, 7572, 8565, 9465, 11420, 12620, 17130, 18930, 34260, 37860, 360301, 720602, 1080903, 1441204, 1801505, 2161806, 3603010, 4323612, 5404515, 7206020, 10809030, 21618060]

約数ペア:

[(1, 21618060), (2, 10809030), (3, 7206020), (4, 5404515), (5, 4323612), (6, 3603010), (10, 2161806), (12, 1801505), (15, 1441204), (20, 1080903), (30, 720602), (60, 360301), (571, 37860), (631, 34260), (1142, 18930), (1262, 17130), (1713, 12620), (1893, 11420), (2284, 9465), (2524, 8565), (2855, 7572), (3155, 6852), (3426, 6310), (3786, 5710)]