81265028

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{409}}^1\times {\mathrm{3821}}^1$

素因数の和:4247

約数の個数: 24

約数和(自身を含む): 153567960

約数和(自身を除く): 72302932

約数列:

[1, 2, 4, 13, 26, 52, 409, 818, 1636, 3821, 5317, 7642, 10634, 15284, 21268, 49673, 99346, 198692, 1562789, 3125578, 6251156, 20316257, 40632514, 81265028]

約数ペア:

[(1, 81265028), (2, 40632514), (4, 20316257), (13, 6251156), (26, 3125578), (52, 1562789), (409, 198692), (818, 99346), (1636, 49673), (3821, 21268), (5317, 15284), (7642, 10634)]