20201477980

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{389}}^1\times {\mathrm{83761}}^1$

素因数の和:84190

約数の個数: 48

約数和(自身を含む): 43904689920

約数和(自身を除く): 23703211940

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 389, 620, 778, 1556, 1945, 3890, 7780, 12059, 24118, 48236, 60295, 83761, 120590, 167522, 241180, 335044, 418805, 837610, 1675220, 2596591, 5193182, 10386364, 12982955, 25965910, 32583029, 51931820, 65166058, 130332116, 162915145, 325830290, 651660580, 1010073899, 2020147798, 4040295596, 5050369495, 10100738990, 20201477980]

約数ペア:

[(1, 20201477980), (2, 10100738990), (4, 5050369495), (5, 4040295596), (10, 2020147798), (20, 1010073899), (31, 651660580), (62, 325830290), (124, 162915145), (155, 130332116), (310, 65166058), (389, 51931820), (620, 32583029), (778, 25965910), (1556, 12982955), (1945, 10386364), (3890, 5193182), (7780, 2596591), (12059, 1675220), (24118, 837610), (48236, 418805), (60295, 335044), (83761, 241180), (120590, 167522)]