20161664770

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{239}}^1\times {\mathrm{648911}}^1$

素因数の和:649170

約数の個数: 32

約数和(自身を含む): 39246197760

約数和(自身を除く): 19084532990

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 239, 478, 1195, 2390, 3107, 6214, 15535, 31070, 648911, 1297822, 3244555, 6489110, 8435843, 16871686, 42179215, 84358430, 155089729, 310179458, 775448645, 1550897290, 2016166477, 4032332954, 10080832385, 20161664770]

約数ペア:

[(1, 20161664770), (2, 10080832385), (5, 4032332954), (10, 2016166477), (13, 1550897290), (26, 775448645), (65, 310179458), (130, 155089729), (239, 84358430), (478, 42179215), (1195, 16871686), (2390, 8435843), (3107, 6489110), (6214, 3244555), (15535, 1297822), (31070, 648911)]