81039620

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{97}}^1\times {\mathrm{1129}}^1$

素因数の和:1272

約数の個数: 48

約数和(自身を含む): 176741040

約数和(自身を除く): 95701420

約数列:

[1, 2, 4, 5, 10, 20, 37, 74, 97, 148, 185, 194, 370, 388, 485, 740, 970, 1129, 1940, 2258, 3589, 4516, 5645, 7178, 11290, 14356, 17945, 22580, 35890, 41773, 71780, 83546, 109513, 167092, 208865, 219026, 417730, 438052, 547565, 835460, 1095130, 2190260, 4051981, 8103962, 16207924, 20259905, 40519810, 81039620]

約数ペア:

[(1, 81039620), (2, 40519810), (4, 20259905), (5, 16207924), (10, 8103962), (20, 4051981), (37, 2190260), (74, 1095130), (97, 835460), (148, 547565), (185, 438052), (194, 417730), (370, 219026), (388, 208865), (485, 167092), (740, 109513), (970, 83546), (1129, 71780), (1940, 41773), (2258, 35890), (3589, 22580), (4516, 17945), (5645, 14356), (7178, 11290)]