81887120

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{89}}^1$

素因数の和:193

約数の個数: 160

約数和(自身を含む): 231413760

約数和(自身を除く): 149526640

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 31, 35, 40, 53, 56, 62, 70, 80, 89, 106, 112, 124, 140, 155, 178, 212, 217, 248, 265, 280, 310, 356, 371, 424, 434, 445, 496, 530, 560, 620, 623, 712, 742, 848, 868, 890, 1060, 1085, 1240, 1246, 1424, 1484, 1643, 1736, 1780, 1855, 2120, 2170, 2480, 2492, 2759, 2968, 3115, 3286, 3472, 3560, 3710, 4240, 4340, 4717, 4984, 5518, 5936, 6230, 6572, 7120, 7420, 8215, 8680, 9434, 9968, 11036, 11501, 12460, 13144, 13795, 14840, 16430, 17360, 18868, 19313, 22072, 23002, 23585, 24920, 26288, 27590, 29680, 32860, 33019, 37736, 38626, 44144, 46004, 47170, 49840, 55180, 57505, 65720, 66038, 75472, 77252, 92008, 94340, 96565, 110360, 115010, 131440, 132076, 146227, 154504, 165095, 184016, 188680, 193130, 220720, 230020, 264152, 292454, 309008, 330190, 377360, 386260, 460040, 528304, 584908, 660380, 731135, 772520, 920080, 1023589, 1169816, 1320760, 1462270, 1545040, 2047178, 2339632, 2641520, 2924540, 4094356, 5117945, 5849080, 8188712, 10235890, 11698160, 16377424, 20471780, 40943560, 81887120]

約数ペア:

[(1, 81887120), (2, 40943560), (4, 20471780), (5, 16377424), (7, 11698160), (8, 10235890), (10, 8188712), (14, 5849080), (16, 5117945), (20, 4094356), (28, 2924540), (31, 2641520), (35, 2339632), (40, 2047178), (53, 1545040), (56, 1462270), (62, 1320760), (70, 1169816), (80, 1023589), (89, 920080), (106, 772520), (112, 731135), (124, 660380), (140, 584908), (155, 528304), (178, 460040), (212, 386260), (217, 377360), (248, 330190), (265, 309008), (280, 292454), (310, 264152), (356, 230020), (371, 220720), (424, 193130), (434, 188680), (445, 184016), (496, 165095), (530, 154504), (560, 146227), (620, 132076), (623, 131440), (712, 115010), (742, 110360), (848, 96565), (868, 94340), (890, 92008), (1060, 77252), (1085, 75472), (1240, 66038), (1246, 65720), (1424, 57505), (1484, 55180), (1643, 49840), (1736, 47170), (1780, 46004), (1855, 44144), (2120, 38626), (2170, 37736), (2480, 33019), (2492, 32860), (2759, 29680), (2968, 27590), (3115, 26288), (3286, 24920), (3472, 23585), (3560, 23002), (3710, 22072), (4240, 19313), (4340, 18868), (4717, 17360), (4984, 16430), (5518, 14840), (5936, 13795), (6230, 13144), (6572, 12460), (7120, 11501), (7420, 11036), (8215, 9968), (8680, 9434)]