21000470463

素因数分解:

$3^2\times 7^1\times {\mathrm{251}}^1\times {\mathrm{1328051}}^1$

素因数の和:1328315

約数の個数: 24

約数和(自身を含む): 34805586816

約数和(自身を除く): 13805116353

約数列:

[1, 3, 7, 9, 21, 63, 251, 753, 1757, 2259, 5271, 15813, 1328051, 3984153, 9296357, 11952459, 27889071, 83667213, 333340801, 1000022403, 2333385607, 3000067209, 7000156821, 21000470463]

約数ペア:

[(1, 21000470463), (3, 7000156821), (7, 3000067209), (9, 2333385607), (21, 1000022403), (63, 333340801), (251, 83667213), (753, 27889071), (1757, 11952459), (2259, 9296357), (5271, 3984153), (15813, 1328051)]