18771940

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{7757}}^1$

素因数の和:7788

約数の個数: 36

約数和(自身を含む): 43336188

約数和(自身を除く): 24564248

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 121, 220, 242, 484, 605, 1210, 2420, 7757, 15514, 31028, 38785, 77570, 85327, 155140, 170654, 341308, 426635, 853270, 938597, 1706540, 1877194, 3754388, 4692985, 9385970, 18771940]

約数ペア:

[(1, 18771940), (2, 9385970), (4, 4692985), (5, 3754388), (10, 1877194), (11, 1706540), (20, 938597), (22, 853270), (44, 426635), (55, 341308), (110, 170654), (121, 155140), (220, 85327), (242, 77570), (484, 38785), (605, 31028), (1210, 15514), (2420, 7757)]