21021715

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{29401}}^1$

素因数の和:29430

約数の個数: 16

約数和(自身を含む): 29637216

約数和(自身を除く): 8615501

約数列:

[1, 5, 11, 13, 55, 65, 143, 715, 29401, 147005, 323411, 382213, 1617055, 1911065, 4204343, 21021715]

約数ペア:

[(1, 21021715), (5, 4204343), (11, 1911065), (13, 1617055), (55, 382213), (65, 323411), (143, 147005), (715, 29401)]