81062660

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{181}}^1\times {\mathrm{457}}^1$

素因数の和:661

約数の個数: 72

約数和(自身を含む): 199554264

約数和(自身を除く): 118491604

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 181, 196, 245, 362, 457, 490, 724, 905, 914, 980, 1267, 1810, 1828, 2285, 2534, 3199, 3620, 4570, 5068, 6335, 6398, 8869, 9140, 12670, 12796, 15995, 17738, 22393, 25340, 31990, 35476, 44345, 44786, 63980, 82717, 88690, 89572, 111965, 165434, 177380, 223930, 330868, 413585, 447860, 579019, 827170, 1158038, 1654340, 2316076, 2895095, 4053133, 5790190, 8106266, 11580380, 16212532, 20265665, 40531330, 81062660]

約数ペア:

[(1, 81062660), (2, 40531330), (4, 20265665), (5, 16212532), (7, 11580380), (10, 8106266), (14, 5790190), (20, 4053133), (28, 2895095), (35, 2316076), (49, 1654340), (70, 1158038), (98, 827170), (140, 579019), (181, 447860), (196, 413585), (245, 330868), (362, 223930), (457, 177380), (490, 165434), (724, 111965), (905, 89572), (914, 88690), (980, 82717), (1267, 63980), (1810, 44786), (1828, 44345), (2285, 35476), (2534, 31990), (3199, 25340), (3620, 22393), (4570, 17738), (5068, 15995), (6335, 12796), (6398, 12670), (8869, 9140)]