81052420

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{79}}^1\times {\mathrm{1193}}^1$

素因数の和:1324

約数の個数: 48

約数和(自身を含む): 176520960

約数和(自身を除く): 95468540

約数列:

[1, 2, 4, 5, 10, 20, 43, 79, 86, 158, 172, 215, 316, 395, 430, 790, 860, 1193, 1580, 2386, 3397, 4772, 5965, 6794, 11930, 13588, 16985, 23860, 33970, 51299, 67940, 94247, 102598, 188494, 205196, 256495, 376988, 471235, 512990, 942470, 1025980, 1884940, 4052621, 8105242, 16210484, 20263105, 40526210, 81052420]

約数ペア:

[(1, 81052420), (2, 40526210), (4, 20263105), (5, 16210484), (10, 8105242), (20, 4052621), (43, 1884940), (79, 1025980), (86, 942470), (158, 512990), (172, 471235), (215, 376988), (316, 256495), (395, 205196), (430, 188494), (790, 102598), (860, 94247), (1193, 67940), (1580, 51299), (2386, 33970), (3397, 23860), (4772, 16985), (5965, 13588), (6794, 11930)]