81387040

素因数分解:

$2^5\times 5^1\times 7^3\times {\mathrm{1483}}^1$

素因数の和:1519

約数の個数: 96

約数和(自身を含む): 224380800

約数和(自身を除く): 142993760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 70, 80, 98, 112, 140, 160, 196, 224, 245, 280, 343, 392, 490, 560, 686, 784, 980, 1120, 1372, 1483, 1568, 1715, 1960, 2744, 2966, 3430, 3920, 5488, 5932, 6860, 7415, 7840, 10381, 10976, 11864, 13720, 14830, 20762, 23728, 27440, 29660, 41524, 47456, 51905, 54880, 59320, 72667, 83048, 103810, 118640, 145334, 166096, 207620, 237280, 290668, 332192, 363335, 415240, 508669, 581336, 726670, 830480, 1017338, 1162672, 1453340, 1660960, 2034676, 2325344, 2543345, 2906680, 4069352, 5086690, 5813360, 8138704, 10173380, 11626720, 16277408, 20346760, 40693520, 81387040]

約数ペア:

[(1, 81387040), (2, 40693520), (4, 20346760), (5, 16277408), (7, 11626720), (8, 10173380), (10, 8138704), (14, 5813360), (16, 5086690), (20, 4069352), (28, 2906680), (32, 2543345), (35, 2325344), (40, 2034676), (49, 1660960), (56, 1453340), (70, 1162672), (80, 1017338), (98, 830480), (112, 726670), (140, 581336), (160, 508669), (196, 415240), (224, 363335), (245, 332192), (280, 290668), (343, 237280), (392, 207620), (490, 166096), (560, 145334), (686, 118640), (784, 103810), (980, 83048), (1120, 72667), (1372, 59320), (1483, 54880), (1568, 51905), (1715, 47456), (1960, 41524), (2744, 29660), (2966, 27440), (3430, 23728), (3920, 20762), (5488, 14830), (5932, 13720), (6860, 11864), (7415, 10976), (7840, 10381)]