261077120

素因数分解:

$2^7\times 5^1\times {\mathrm{503}}^1\times {\mathrm{811}}^1$

素因数の和:1333

約数の個数: 64

約数和(自身を含む): 626149440

約数和(自身を除く): 365072320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 503, 640, 811, 1006, 1622, 2012, 2515, 3244, 4024, 4055, 5030, 6488, 8048, 8110, 10060, 12976, 16096, 16220, 20120, 25952, 32192, 32440, 40240, 51904, 64384, 64880, 80480, 103808, 129760, 160960, 259520, 321920, 407933, 519040, 815866, 1631732, 2039665, 3263464, 4079330, 6526928, 8158660, 13053856, 16317320, 26107712, 32634640, 52215424, 65269280, 130538560, 261077120]

約数ペア:

[(1, 261077120), (2, 130538560), (4, 65269280), (5, 52215424), (8, 32634640), (10, 26107712), (16, 16317320), (20, 13053856), (32, 8158660), (40, 6526928), (64, 4079330), (80, 3263464), (128, 2039665), (160, 1631732), (320, 815866), (503, 519040), (640, 407933), (811, 321920), (1006, 259520), (1622, 160960), (2012, 129760), (2515, 103808), (3244, 80480), (4024, 64880), (4055, 64384), (5030, 51904), (6488, 40240), (8048, 32440), (8110, 32192), (10060, 25952), (12976, 20120), (16096, 16220)]