21660318

素因数分解:

$2^1\times 3^3\times {\mathrm{37}}^2\times {\mathrm{293}}^1$

素因数の和:378

約数の個数: 48

約数和(自身を含む): 49638960

約数和(自身を除く): 27978642

約数列:

[1, 2, 3, 6, 9, 18, 27, 37, 54, 74, 111, 222, 293, 333, 586, 666, 879, 999, 1369, 1758, 1998, 2637, 2738, 4107, 5274, 7911, 8214, 10841, 12321, 15822, 21682, 24642, 32523, 36963, 65046, 73926, 97569, 195138, 292707, 401117, 585414, 802234, 1203351, 2406702, 3610053, 7220106, 10830159, 21660318]

約数ペア:

[(1, 21660318), (2, 10830159), (3, 7220106), (6, 3610053), (9, 2406702), (18, 1203351), (27, 802234), (37, 585414), (54, 401117), (74, 292707), (111, 195138), (222, 97569), (293, 73926), (333, 65046), (586, 36963), (666, 32523), (879, 24642), (999, 21682), (1369, 15822), (1758, 12321), (1998, 10841), (2637, 8214), (2738, 7911), (4107, 5274)]