1997979760

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{1621}}^1$

素因数の和:1743

約数の個数: 160

約数和(自身を含む): 5560786944

約数和(自身を除く): 3562807184

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 31, 35, 40, 56, 62, 70, 71, 80, 112, 124, 140, 142, 155, 217, 248, 280, 284, 310, 355, 434, 496, 497, 560, 568, 620, 710, 868, 994, 1085, 1136, 1240, 1420, 1621, 1736, 1988, 2170, 2201, 2480, 2485, 2840, 3242, 3472, 3976, 4340, 4402, 4970, 5680, 6484, 7952, 8105, 8680, 8804, 9940, 11005, 11347, 12968, 15407, 16210, 17360, 17608, 19880, 22010, 22694, 25936, 30814, 32420, 35216, 39760, 44020, 45388, 50251, 56735, 61628, 64840, 77035, 88040, 90776, 100502, 113470, 115091, 123256, 129680, 154070, 176080, 181552, 201004, 226940, 230182, 246512, 251255, 308140, 351757, 402008, 453880, 460364, 502510, 575455, 616280, 703514, 804016, 805637, 907760, 920728, 1005020, 1150910, 1232560, 1407028, 1611274, 1758785, 1841456, 2010040, 2301820, 2814056, 3222548, 3517570, 3567821, 4020080, 4028185, 4603640, 5628112, 6445096, 7035140, 7135642, 8056370, 9207280, 12890192, 14070280, 14271284, 16112740, 17839105, 24974747, 28140560, 28542568, 32225480, 35678210, 49949494, 57085136, 64450960, 71356420, 99898988, 124873735, 142712840, 199797976, 249747470, 285425680, 399595952, 499494940, 998989880, 1997979760]

約数ペア:

[(1, 1997979760), (2, 998989880), (4, 499494940), (5, 399595952), (7, 285425680), (8, 249747470), (10, 199797976), (14, 142712840), (16, 124873735), (20, 99898988), (28, 71356420), (31, 64450960), (35, 57085136), (40, 49949494), (56, 35678210), (62, 32225480), (70, 28542568), (71, 28140560), (80, 24974747), (112, 17839105), (124, 16112740), (140, 14271284), (142, 14070280), (155, 12890192), (217, 9207280), (248, 8056370), (280, 7135642), (284, 7035140), (310, 6445096), (355, 5628112), (434, 4603640), (496, 4028185), (497, 4020080), (560, 3567821), (568, 3517570), (620, 3222548), (710, 2814056), (868, 2301820), (994, 2010040), (1085, 1841456), (1136, 1758785), (1240, 1611274), (1420, 1407028), (1621, 1232560), (1736, 1150910), (1988, 1005020), (2170, 920728), (2201, 907760), (2480, 805637), (2485, 804016), (2840, 703514), (3242, 616280), (3472, 575455), (3976, 502510), (4340, 460364), (4402, 453880), (4970, 402008), (5680, 351757), (6484, 308140), (7952, 251255), (8105, 246512), (8680, 230182), (8804, 226940), (9940, 201004), (11005, 181552), (11347, 176080), (12968, 154070), (15407, 129680), (16210, 123256), (17360, 115091), (17608, 113470), (19880, 100502), (22010, 90776), (22694, 88040), (25936, 77035), (30814, 64840), (32420, 61628), (35216, 56735), (39760, 50251), (44020, 45388)]