779026900

素因数分解:

$2^2\times 5^2\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{3181}}^1$

素因数の和:3305

約数の個数: 72

約数和(自身を含む): 1767664640

約数和(自身を除く): 988637740

約数列:

[1, 2, 4, 5, 10, 20, 25, 31, 50, 62, 79, 100, 124, 155, 158, 310, 316, 395, 620, 775, 790, 1550, 1580, 1975, 2449, 3100, 3181, 3950, 4898, 6362, 7900, 9796, 12245, 12724, 15905, 24490, 31810, 48980, 61225, 63620, 79525, 98611, 122450, 159050, 197222, 244900, 251299, 318100, 394444, 493055, 502598, 986110, 1005196, 1256495, 1972220, 2465275, 2512990, 4930550, 5025980, 6282475, 7790269, 9861100, 12564950, 15580538, 25129900, 31161076, 38951345, 77902690, 155805380, 194756725, 389513450, 779026900]

約数ペア:

[(1, 779026900), (2, 389513450), (4, 194756725), (5, 155805380), (10, 77902690), (20, 38951345), (25, 31161076), (31, 25129900), (50, 15580538), (62, 12564950), (79, 9861100), (100, 7790269), (124, 6282475), (155, 5025980), (158, 4930550), (310, 2512990), (316, 2465275), (395, 1972220), (620, 1256495), (775, 1005196), (790, 986110), (1550, 502598), (1580, 493055), (1975, 394444), (2449, 318100), (3100, 251299), (3181, 244900), (3950, 197222), (4898, 159050), (6362, 122450), (7900, 98611), (9796, 79525), (12245, 63620), (12724, 61225), (15905, 48980), (24490, 31810)]