81522560

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{587}}^1$

素因数の和:644

約数の個数: 128

約数和(自身を含む): 230307840

約数和(自身を除く): 148785280

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 31, 32, 35, 40, 56, 62, 64, 70, 80, 112, 124, 128, 140, 155, 160, 217, 224, 248, 280, 310, 320, 434, 448, 496, 560, 587, 620, 640, 868, 896, 992, 1085, 1120, 1174, 1240, 1736, 1984, 2170, 2240, 2348, 2480, 2935, 3472, 3968, 4109, 4340, 4480, 4696, 4960, 5870, 6944, 8218, 8680, 9392, 9920, 11740, 13888, 16436, 17360, 18197, 18784, 19840, 20545, 23480, 27776, 32872, 34720, 36394, 37568, 41090, 46960, 65744, 69440, 72788, 75136, 82180, 90985, 93920, 127379, 131488, 138880, 145576, 164360, 181970, 187840, 254758, 262976, 291152, 328720, 363940, 375680, 509516, 525952, 582304, 636895, 657440, 727880, 1019032, 1164608, 1273790, 1314880, 1455760, 2038064, 2329216, 2547580, 2629760, 2911520, 4076128, 5095160, 5823040, 8152256, 10190320, 11646080, 16304512, 20380640, 40761280, 81522560]

約数ペア:

[(1, 81522560), (2, 40761280), (4, 20380640), (5, 16304512), (7, 11646080), (8, 10190320), (10, 8152256), (14, 5823040), (16, 5095160), (20, 4076128), (28, 2911520), (31, 2629760), (32, 2547580), (35, 2329216), (40, 2038064), (56, 1455760), (62, 1314880), (64, 1273790), (70, 1164608), (80, 1019032), (112, 727880), (124, 657440), (128, 636895), (140, 582304), (155, 525952), (160, 509516), (217, 375680), (224, 363940), (248, 328720), (280, 291152), (310, 262976), (320, 254758), (434, 187840), (448, 181970), (496, 164360), (560, 145576), (587, 138880), (620, 131488), (640, 127379), (868, 93920), (896, 90985), (992, 82180), (1085, 75136), (1120, 72788), (1174, 69440), (1240, 65744), (1736, 46960), (1984, 41090), (2170, 37568), (2240, 36394), (2348, 34720), (2480, 32872), (2935, 27776), (3472, 23480), (3968, 20545), (4109, 19840), (4340, 18784), (4480, 18197), (4696, 17360), (4960, 16436), (5870, 13888), (6944, 11740), (8218, 9920), (8680, 9392)]