21307758

素因数分解:

$2^1\times 3^1\times {\mathrm{509}}^1\times {\mathrm{6977}}^1$

素因数の和:7491

約数の個数: 16

約数和(自身を含む): 42705360

約数和(自身を除く): 21397602

約数列:

[1, 2, 3, 6, 509, 1018, 1527, 3054, 6977, 13954, 20931, 41862, 3551293, 7102586, 10653879, 21307758]

約数ペア:

[(1, 21307758), (2, 10653879), (3, 7102586), (6, 3551293), (509, 41862), (1018, 20931), (1527, 13954), (3054, 6977)]