19578520

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{1637}}^1$

素因数の和:1684

約数の個数: 64

約数和(自身を含む): 49533120

約数和(自身を除く): 29954600

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 23, 26, 40, 46, 52, 65, 92, 104, 115, 130, 184, 230, 260, 299, 460, 520, 598, 920, 1196, 1495, 1637, 2392, 2990, 3274, 5980, 6548, 8185, 11960, 13096, 16370, 21281, 32740, 37651, 42562, 65480, 75302, 85124, 106405, 150604, 170248, 188255, 212810, 301208, 376510, 425620, 489463, 753020, 851240, 978926, 1506040, 1957852, 2447315, 3915704, 4894630, 9789260, 19578520]

約数ペア:

[(1, 19578520), (2, 9789260), (4, 4894630), (5, 3915704), (8, 2447315), (10, 1957852), (13, 1506040), (20, 978926), (23, 851240), (26, 753020), (40, 489463), (46, 425620), (52, 376510), (65, 301208), (92, 212810), (104, 188255), (115, 170248), (130, 150604), (184, 106405), (230, 85124), (260, 75302), (299, 65480), (460, 42562), (520, 37651), (598, 32740), (920, 21281), (1196, 16370), (1495, 13096), (1637, 11960), (2392, 8185), (2990, 6548), (3274, 5980)]