20415928

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{196307}}^1$

素因数の和:196326

約数の個数: 16

約数和(自身を含む): 41224680

約数和(自身を除く): 20808752

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 196307, 392614, 785228, 1570456, 2551991, 5103982, 10207964, 20415928]

約数ペア:

[(1, 20415928), (2, 10207964), (4, 5103982), (8, 2551991), (13, 1570456), (26, 785228), (52, 392614), (104, 196307)]