251356833

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{557}}^1$

素因数の和:631

約数の個数: 96

約数和(自身を含む): 487468800

約数和(自身を除く): 236111967

約数列:

[1, 3, 7, 9, 13, 19, 21, 29, 39, 57, 63, 87, 91, 117, 133, 171, 203, 247, 261, 273, 377, 399, 551, 557, 609, 741, 819, 1131, 1197, 1653, 1671, 1729, 1827, 2223, 2639, 3393, 3857, 3899, 4959, 5013, 5187, 7163, 7241, 7917, 10583, 11571, 11697, 15561, 16153, 21489, 21723, 23751, 31749, 34713, 35091, 48459, 50141, 50687, 64467, 65169, 74081, 95247, 113071, 137579, 145377, 150423, 152061, 209989, 222243, 306907, 339213, 412737, 451269, 456183, 629967, 666729, 920721, 963053, 1017639, 1238211, 1469923, 1889901, 2148349, 2762163, 2889159, 3989791, 4409769, 6445047, 8667477, 11969373, 13229307, 19335141, 27928537, 35908119, 83785611, 251356833]

約数ペア:

[(1, 251356833), (3, 83785611), (7, 35908119), (9, 27928537), (13, 19335141), (19, 13229307), (21, 11969373), (29, 8667477), (39, 6445047), (57, 4409769), (63, 3989791), (87, 2889159), (91, 2762163), (117, 2148349), (133, 1889901), (171, 1469923), (203, 1238211), (247, 1017639), (261, 963053), (273, 920721), (377, 666729), (399, 629967), (551, 456183), (557, 451269), (609, 412737), (741, 339213), (819, 306907), (1131, 222243), (1197, 209989), (1653, 152061), (1671, 150423), (1729, 145377), (1827, 137579), (2223, 113071), (2639, 95247), (3393, 74081), (3857, 65169), (3899, 64467), (4959, 50687), (5013, 50141), (5187, 48459), (7163, 35091), (7241, 34713), (7917, 31749), (10583, 23751), (11571, 21723), (11697, 21489), (15561, 16153)]