21531810

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{263}}^1\times {\mathrm{2729}}^1$

素因数の和:3002

約数の個数: 32

約数和(自身を含む): 51891840

約数和(自身を除く): 30360030

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 263, 526, 789, 1315, 1578, 2630, 2729, 3945, 5458, 7890, 8187, 13645, 16374, 27290, 40935, 81870, 717727, 1435454, 2153181, 3588635, 4306362, 7177270, 10765905, 21531810]

約数ペア:

[(1, 21531810), (2, 10765905), (3, 7177270), (5, 4306362), (6, 3588635), (10, 2153181), (15, 1435454), (30, 717727), (263, 81870), (526, 40935), (789, 27290), (1315, 16374), (1578, 13645), (2630, 8187), (2729, 7890), (3945, 5458)]