21286438

素因数分解:

$2^1\times {\mathrm{61}}^1\times {\mathrm{149}}^1\times {\mathrm{1171}}^1$

素因数の和:1383

約数の個数: 16

約数和(自身を含む): 32698800

約数和(自身を除く): 11412362

約数列:

[1, 2, 61, 122, 149, 298, 1171, 2342, 9089, 18178, 71431, 142862, 174479, 348958, 10643219, 21286438]

約数ペア:

[(1, 21286438), (2, 10643219), (61, 348958), (122, 174479), (149, 142862), (298, 71431), (1171, 18178), (2342, 9089)]