21315126

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{507503}}^1$

素因数の和:507515

約数の個数: 16

約数和(自身を含む): 48720384

約数和(自身を除く): 27405258

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 507503, 1015006, 1522509, 3045018, 3552521, 7105042, 10657563, 21315126]

約数ペア:

[(1, 21315126), (2, 10657563), (3, 7105042), (6, 3552521), (7, 3045018), (14, 1522509), (21, 1015006), (42, 507503)]