18691988

素因数分解:

$2^2\times 7^1\times {\mathrm{151}}^1\times {\mathrm{4421}}^1$

素因数の和:4583

約数の個数: 24

約数和(自身を含む): 37640064

約数和(自身を除く): 18948076

約数列:

[1, 2, 4, 7, 14, 28, 151, 302, 604, 1057, 2114, 4228, 4421, 8842, 17684, 30947, 61894, 123788, 667571, 1335142, 2670284, 4672997, 9345994, 18691988]

約数ペア:

[(1, 18691988), (2, 9345994), (4, 4672997), (7, 2670284), (14, 1335142), (28, 667571), (151, 123788), (302, 61894), (604, 30947), (1057, 17684), (2114, 8842), (4228, 4421)]