278157055

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{163}}^1$

素因数の和:292

約数の個数: 64

約数和(自身を含む): 408084480

約数和(自身を除く): 129927425

約数列:

[1, 5, 11, 19, 23, 55, 71, 95, 115, 163, 209, 253, 355, 437, 781, 815, 1045, 1265, 1349, 1633, 1793, 2185, 3097, 3749, 3905, 4807, 6745, 8165, 8965, 11573, 14839, 15485, 17963, 18745, 24035, 31027, 34067, 41239, 57865, 71231, 74195, 89815, 127303, 155135, 170335, 206195, 219887, 266179, 341297, 356155, 636515, 783541, 1099435, 1330895, 1706485, 2418757, 2927969, 3917705, 5057401, 12093785, 14639845, 25287005, 55631411, 278157055]

約数ペア:

[(1, 278157055), (5, 55631411), (11, 25287005), (19, 14639845), (23, 12093785), (55, 5057401), (71, 3917705), (95, 2927969), (115, 2418757), (163, 1706485), (209, 1330895), (253, 1099435), (355, 783541), (437, 636515), (781, 356155), (815, 341297), (1045, 266179), (1265, 219887), (1349, 206195), (1633, 170335), (1793, 155135), (2185, 127303), (3097, 89815), (3749, 74195), (3905, 71231), (4807, 57865), (6745, 41239), (8165, 34067), (8965, 31027), (11573, 24035), (14839, 18745), (15485, 17963)]