21000620158

素因数分解:

$2^1\times 7^1\times {\mathrm{2357}}^1\times {\mathrm{636421}}^1$

素因数の和:638787

約数の個数: 16

約数和(自身を含む): 36016393824

約数和(自身を除く): 15015773666

約数列:

[1, 2, 7, 14, 2357, 4714, 16499, 32998, 636421, 1272842, 4454947, 8909894, 1500044297, 3000088594, 10500310079, 21000620158]

約数ペア:

[(1, 21000620158), (2, 10500310079), (7, 3000088594), (14, 1500044297), (2357, 8909894), (4714, 4454947), (16499, 1272842), (32998, 636421)]