21201212

素因数分解:

$2^2\times {\mathrm{67}}^1\times {\mathrm{239}}^1\times {\mathrm{331}}^1$

素因数の和:641

約数の個数: 24

約数和(自身を含む): 37927680

約数和(自身を除く): 16726468

約数列:

[1, 2, 4, 67, 134, 239, 268, 331, 478, 662, 956, 1324, 16013, 22177, 32026, 44354, 64052, 79109, 88708, 158218, 316436, 5300303, 10600606, 21201212]

約数ペア:

[(1, 21201212), (2, 10600606), (4, 5300303), (67, 316436), (134, 158218), (239, 88708), (268, 79109), (331, 64052), (478, 44354), (662, 32026), (956, 22177), (1324, 16013)]