80785400

素因数分解:

$2^3\times 5^2\times {\mathrm{79}}^1\times {\mathrm{5113}}^1$

素因数の和:5208

約数の個数: 48

約数和(自身を含む): 190240800

約数和(自身を除く): 109455400

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 79, 100, 158, 200, 316, 395, 632, 790, 1580, 1975, 3160, 3950, 5113, 7900, 10226, 15800, 20452, 25565, 40904, 51130, 102260, 127825, 204520, 255650, 403927, 511300, 807854, 1022600, 1615708, 2019635, 3231416, 4039270, 8078540, 10098175, 16157080, 20196350, 40392700, 80785400]

約数ペア:

[(1, 80785400), (2, 40392700), (4, 20196350), (5, 16157080), (8, 10098175), (10, 8078540), (20, 4039270), (25, 3231416), (40, 2019635), (50, 1615708), (79, 1022600), (100, 807854), (158, 511300), (200, 403927), (316, 255650), (395, 204520), (632, 127825), (790, 102260), (1580, 51130), (1975, 40904), (3160, 25565), (3950, 20452), (5113, 15800), (7900, 10226)]