21000304826

素因数分解:

$2^1\times {\mathrm{43}}^1\times {\mathrm{641}}^1\times {\mathrm{380951}}^1$

素因数の和:381637

約数の個数: 16

約数和(自身を含む): 32283396288

約数和(自身を除く): 11283091462

約数列:

[1, 2, 43, 86, 641, 1282, 27563, 55126, 380951, 761902, 16380893, 32761786, 244189591, 488379182, 10500152413, 21000304826]

約数ペア:

[(1, 21000304826), (2, 10500152413), (43, 488379182), (86, 244189591), (641, 32761786), (1282, 16380893), (27563, 761902), (55126, 380951)]