21385218

素因数分解:

$2^1\times 3^1\times {\mathrm{17}}^1\times {\mathrm{209659}}^1$

素因数の和:209681

約数の個数: 16

約数和(自身を含む): 45286560

約数和(自身を除く): 23901342

約数列:

[1, 2, 3, 6, 17, 34, 51, 102, 209659, 419318, 628977, 1257954, 3564203, 7128406, 10692609, 21385218]

約数ペア:

[(1, 21385218), (2, 10692609), (3, 7128406), (6, 3564203), (17, 1257954), (34, 628977), (51, 419318), (102, 209659)]