21000948969

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{6993323}}^1$

素因数の和:6993357

約数の個数: 32

約数和(自身を含む): 37596109824

約数和(自身を除く): 16595160855

約数列:

[1, 3, 7, 11, 13, 21, 33, 39, 77, 91, 143, 231, 273, 429, 1001, 3003, 6993323, 20979969, 48953261, 76926553, 90913199, 146859783, 230779659, 272739597, 538485871, 636392393, 1000045189, 1615457613, 1909177179, 3000135567, 7000316323, 21000948969]

約数ペア:

[(1, 21000948969), (3, 7000316323), (7, 3000135567), (11, 1909177179), (13, 1615457613), (21, 1000045189), (33, 636392393), (39, 538485871), (77, 272739597), (91, 230779659), (143, 146859783), (231, 90913199), (273, 76926553), (429, 48953261), (1001, 20979969), (3003, 6993323)]