2021628680

素因数分解:

$2^3\times 5^1\times {\mathrm{131}}^1\times {\mathrm{193}}^1\times {\mathrm{1999}}^1$

素因数の和:2334

約数の個数: 64

約数和(自身を含む): 4609440000

約数和(自身を除く): 2587811320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 131, 193, 262, 386, 524, 655, 772, 965, 1048, 1310, 1544, 1930, 1999, 2620, 3860, 3998, 5240, 7720, 7996, 9995, 15992, 19990, 25283, 39980, 50566, 79960, 101132, 126415, 202264, 252830, 261869, 385807, 505660, 523738, 771614, 1011320, 1047476, 1309345, 1543228, 1929035, 2094952, 2618690, 3086456, 3858070, 5237380, 7716140, 10474760, 15432280, 50540717, 101081434, 202162868, 252703585, 404325736, 505407170, 1010814340, 2021628680]

約数ペア:

[(1, 2021628680), (2, 1010814340), (4, 505407170), (5, 404325736), (8, 252703585), (10, 202162868), (20, 101081434), (40, 50540717), (131, 15432280), (193, 10474760), (262, 7716140), (386, 5237380), (524, 3858070), (655, 3086456), (772, 2618690), (965, 2094952), (1048, 1929035), (1310, 1543228), (1544, 1309345), (1930, 1047476), (1999, 1011320), (2620, 771614), (3860, 523738), (3998, 505660), (5240, 385807), (7720, 261869), (7996, 252830), (9995, 202264), (15992, 126415), (19990, 101132), (25283, 79960), (39980, 50566)]