20111778860

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{431}}^1\times {\mathrm{1031}}^1$

素因数の和:1575

約数の個数: 96

約数和(自身を含む): 44339871744

約数和(自身を除く): 24228092884

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 73, 124, 146, 155, 292, 310, 365, 431, 620, 730, 862, 1031, 1460, 1724, 2062, 2155, 2263, 4124, 4310, 4526, 5155, 8620, 9052, 10310, 11315, 13361, 20620, 22630, 26722, 31463, 31961, 45260, 53444, 62926, 63922, 66805, 75263, 125852, 127844, 133610, 150526, 157315, 159805, 267220, 301052, 314630, 319610, 376315, 444361, 629260, 639220, 752630, 888722, 975353, 1505260, 1777444, 1950706, 2221805, 2333153, 3901412, 4443610, 4666306, 4876765, 8887220, 9332612, 9753530, 11665765, 13775191, 19507060, 23331530, 27550382, 32438353, 46663060, 55100764, 64876706, 68875955, 129753412, 137751910, 162191765, 275503820, 324383530, 648767060, 1005588943, 2011177886, 4022355772, 5027944715, 10055889430, 20111778860]

約数ペア:

[(1, 20111778860), (2, 10055889430), (4, 5027944715), (5, 4022355772), (10, 2011177886), (20, 1005588943), (31, 648767060), (62, 324383530), (73, 275503820), (124, 162191765), (146, 137751910), (155, 129753412), (292, 68875955), (310, 64876706), (365, 55100764), (431, 46663060), (620, 32438353), (730, 27550382), (862, 23331530), (1031, 19507060), (1460, 13775191), (1724, 11665765), (2062, 9753530), (2155, 9332612), (2263, 8887220), (4124, 4876765), (4310, 4666306), (4526, 4443610), (5155, 3901412), (8620, 2333153), (9052, 2221805), (10310, 1950706), (11315, 1777444), (13361, 1505260), (20620, 975353), (22630, 888722), (26722, 752630), (31463, 639220), (31961, 629260), (45260, 444361), (53444, 376315), (62926, 319610), (63922, 314630), (66805, 301052), (75263, 267220), (125852, 159805), (127844, 157315), (133610, 150526)]