81784640

素因数分解:

$2^6\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{1259}}^1$

素因数の和:1312

約数の個数: 112

約数和(自身を含む): 230428800

約数和(自身を除く): 148644160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 29, 32, 35, 40, 56, 58, 64, 70, 80, 112, 116, 140, 145, 160, 203, 224, 232, 280, 290, 320, 406, 448, 464, 560, 580, 812, 928, 1015, 1120, 1160, 1259, 1624, 1856, 2030, 2240, 2320, 2518, 3248, 4060, 4640, 5036, 6295, 6496, 8120, 8813, 9280, 10072, 12590, 12992, 16240, 17626, 20144, 25180, 32480, 35252, 36511, 40288, 44065, 50360, 64960, 70504, 73022, 80576, 88130, 100720, 141008, 146044, 176260, 182555, 201440, 255577, 282016, 292088, 352520, 365110, 402880, 511154, 564032, 584176, 705040, 730220, 1022308, 1168352, 1277885, 1410080, 1460440, 2044616, 2336704, 2555770, 2820160, 2920880, 4089232, 5111540, 5841760, 8178464, 10223080, 11683520, 16356928, 20446160, 40892320, 81784640]

約数ペア:

[(1, 81784640), (2, 40892320), (4, 20446160), (5, 16356928), (7, 11683520), (8, 10223080), (10, 8178464), (14, 5841760), (16, 5111540), (20, 4089232), (28, 2920880), (29, 2820160), (32, 2555770), (35, 2336704), (40, 2044616), (56, 1460440), (58, 1410080), (64, 1277885), (70, 1168352), (80, 1022308), (112, 730220), (116, 705040), (140, 584176), (145, 564032), (160, 511154), (203, 402880), (224, 365110), (232, 352520), (280, 292088), (290, 282016), (320, 255577), (406, 201440), (448, 182555), (464, 176260), (560, 146044), (580, 141008), (812, 100720), (928, 88130), (1015, 80576), (1120, 73022), (1160, 70504), (1259, 64960), (1624, 50360), (1856, 44065), (2030, 40288), (2240, 36511), (2320, 35252), (2518, 32480), (3248, 25180), (4060, 20144), (4640, 17626), (5036, 16240), (6295, 12992), (6496, 12590), (8120, 10072), (8813, 9280)]