251316009

素因数分解:

$3^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{251}}^1\times {\mathrm{691}}^1$

素因数の和:978

約数の個数: 48

約数和(自身を含む): 435262464

約数和(自身を除く): 183946455

約数列:

[1, 3, 7, 9, 21, 23, 63, 69, 161, 207, 251, 483, 691, 753, 1449, 1757, 2073, 2259, 4837, 5271, 5773, 6219, 14511, 15813, 15893, 17319, 40411, 43533, 47679, 51957, 111251, 121233, 143037, 173441, 333753, 363699, 520323, 1001259, 1214087, 1560969, 3642261, 3989143, 10926783, 11967429, 27924001, 35902287, 83772003, 251316009]

約数ペア:

[(1, 251316009), (3, 83772003), (7, 35902287), (9, 27924001), (21, 11967429), (23, 10926783), (63, 3989143), (69, 3642261), (161, 1560969), (207, 1214087), (251, 1001259), (483, 520323), (691, 363699), (753, 333753), (1449, 173441), (1757, 143037), (2073, 121233), (2259, 111251), (4837, 51957), (5271, 47679), (5773, 43533), (6219, 40411), (14511, 17319), (15813, 15893)]