20675280

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{277}}^1\times {\mathrm{311}}^1$

素因数の和:604

約数の個数: 80

約数和(自身を含む): 64531584

約数和(自身を除く): 43856304

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 277, 311, 554, 622, 831, 933, 1108, 1244, 1385, 1555, 1662, 1866, 2216, 2488, 2770, 3110, 3324, 3732, 4155, 4432, 4665, 4976, 5540, 6220, 6648, 7464, 8310, 9330, 11080, 12440, 13296, 14928, 16620, 18660, 22160, 24880, 33240, 37320, 66480, 74640, 86147, 172294, 258441, 344588, 430735, 516882, 689176, 861470, 1033764, 1292205, 1378352, 1722940, 2067528, 2584410, 3445880, 4135056, 5168820, 6891760, 10337640, 20675280]

約数ペア:

[(1, 20675280), (2, 10337640), (3, 6891760), (4, 5168820), (5, 4135056), (6, 3445880), (8, 2584410), (10, 2067528), (12, 1722940), (15, 1378352), (16, 1292205), (20, 1033764), (24, 861470), (30, 689176), (40, 516882), (48, 430735), (60, 344588), (80, 258441), (120, 172294), (240, 86147), (277, 74640), (311, 66480), (554, 37320), (622, 33240), (831, 24880), (933, 22160), (1108, 18660), (1244, 16620), (1385, 14928), (1555, 13296), (1662, 12440), (1866, 11080), (2216, 9330), (2488, 8310), (2770, 7464), (3110, 6648), (3324, 6220), (3732, 5540), (4155, 4976), (4432, 4665)]