201521655

素因数分解:

$3^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{277}}^1\times {\mathrm{317}}^1$

素因数の和:625

約数の個数: 64

約数和(自身を含む): 381905280

約数和(自身を除く): 180383625

約数列:

[1, 3, 5, 9, 15, 17, 27, 45, 51, 85, 135, 153, 255, 277, 317, 459, 765, 831, 951, 1385, 1585, 2295, 2493, 2853, 4155, 4709, 4755, 5389, 7479, 8559, 12465, 14127, 14265, 16167, 23545, 26945, 37395, 42381, 42795, 48501, 70635, 80835, 87809, 127143, 145503, 211905, 242505, 263427, 439045, 635715, 727515, 790281, 1317135, 1492753, 2370843, 3951405, 4478259, 7463765, 11854215, 13434777, 22391295, 40304331, 67173885, 201521655]

約数ペア:

[(1, 201521655), (3, 67173885), (5, 40304331), (9, 22391295), (15, 13434777), (17, 11854215), (27, 7463765), (45, 4478259), (51, 3951405), (85, 2370843), (135, 1492753), (153, 1317135), (255, 790281), (277, 727515), (317, 635715), (459, 439045), (765, 263427), (831, 242505), (951, 211905), (1385, 145503), (1585, 127143), (2295, 87809), (2493, 80835), (2853, 70635), (4155, 48501), (4709, 42795), (4755, 42381), (5389, 37395), (7479, 26945), (8559, 23545), (12465, 16167), (14127, 14265)]