20521860

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{211}}^1\times {\mathrm{1621}}^1$

素因数の和:1844

約数の個数: 48

約数和(自身を含む): 57769152

約数和(自身を除く): 37247292

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 211, 422, 633, 844, 1055, 1266, 1621, 2110, 2532, 3165, 3242, 4220, 4863, 6330, 6484, 8105, 9726, 12660, 16210, 19452, 24315, 32420, 48630, 97260, 342031, 684062, 1026093, 1368124, 1710155, 2052186, 3420310, 4104372, 5130465, 6840620, 10260930, 20521860]

約数ペア:

[(1, 20521860), (2, 10260930), (3, 6840620), (4, 5130465), (5, 4104372), (6, 3420310), (10, 2052186), (12, 1710155), (15, 1368124), (20, 1026093), (30, 684062), (60, 342031), (211, 97260), (422, 48630), (633, 32420), (844, 24315), (1055, 19452), (1266, 16210), (1621, 12660), (2110, 9726), (2532, 8105), (3165, 6484), (3242, 6330), (4220, 4863)]