21391364

素因数分解:

$2^2\times {\mathrm{31}}^1\times {\mathrm{167}}^1\times {\mathrm{1033}}^1$

素因数の和:1235

約数の個数: 24

約数和(自身を含む): 38911488

約数和(自身を除く): 17520124

約数列:

[1, 2, 4, 31, 62, 124, 167, 334, 668, 1033, 2066, 4132, 5177, 10354, 20708, 32023, 64046, 128092, 172511, 345022, 690044, 5347841, 10695682, 21391364]

約数ペア:

[(1, 21391364), (2, 10695682), (4, 5347841), (31, 690044), (62, 345022), (124, 172511), (167, 128092), (334, 64046), (668, 32023), (1033, 20708), (2066, 10354), (4132, 5177)]