20892520

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{103}}^1\times {\mathrm{461}}^1$

素因数の和:586

約数の個数: 64

約数和(自身を含む): 51891840

約数和(自身を除く): 30999320

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 103, 110, 206, 220, 412, 440, 461, 515, 824, 922, 1030, 1133, 1844, 2060, 2266, 2305, 3688, 4120, 4532, 4610, 5071, 5665, 9064, 9220, 10142, 11330, 18440, 20284, 22660, 25355, 40568, 45320, 47483, 50710, 94966, 101420, 189932, 202840, 237415, 379864, 474830, 522313, 949660, 1044626, 1899320, 2089252, 2611565, 4178504, 5223130, 10446260, 20892520]

約数ペア:

[(1, 20892520), (2, 10446260), (4, 5223130), (5, 4178504), (8, 2611565), (10, 2089252), (11, 1899320), (20, 1044626), (22, 949660), (40, 522313), (44, 474830), (55, 379864), (88, 237415), (103, 202840), (110, 189932), (206, 101420), (220, 94966), (412, 50710), (440, 47483), (461, 45320), (515, 40568), (824, 25355), (922, 22660), (1030, 20284), (1133, 18440), (1844, 11330), (2060, 10142), (2266, 9220), (2305, 9064), (3688, 5665), (4120, 5071), (4532, 4610)]