20213180

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{77743}}^1$

素因数の和:77765

約数の個数: 24

約数和(自身を含む): 45713472

約数和(自身を除く): 25500292

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 77743, 155486, 310972, 388715, 777430, 1010659, 1554860, 2021318, 4042636, 5053295, 10106590, 20213180]

約数ペア:

[(1, 20213180), (2, 10106590), (4, 5053295), (5, 4042636), (10, 2021318), (13, 1554860), (20, 1010659), (26, 777430), (52, 388715), (65, 310972), (130, 155486), (260, 77743)]