18221538

素因数分解:

$2^1\times 3^1\times {\mathrm{37}}^1\times {\mathrm{211}}^1\times {\mathrm{389}}^1$

素因数の和:642

約数の個数: 32

約数和(自身を含む): 37702080

約数和(自身を除く): 19480542

約数列:

[1, 2, 3, 6, 37, 74, 111, 211, 222, 389, 422, 633, 778, 1167, 1266, 2334, 7807, 14393, 15614, 23421, 28786, 43179, 46842, 82079, 86358, 164158, 246237, 492474, 3036923, 6073846, 9110769, 18221538]

約数ペア:

[(1, 18221538), (2, 9110769), (3, 6073846), (6, 3036923), (37, 492474), (74, 246237), (111, 164158), (211, 86358), (222, 82079), (389, 46842), (422, 43179), (633, 28786), (778, 23421), (1167, 15614), (1266, 14393), (2334, 7807)]