19985192720

素因数分解:

$2^4\times 5^1\times {\mathrm{59}}^1\times {\mathrm{1801}}^1\times {\mathrm{2351}}^1$

素因数の和:4224

約数の個数: 80

約数和(自身を含む): 47299472640

約数和(自身を除く): 27314279920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 59, 80, 118, 236, 295, 472, 590, 944, 1180, 1801, 2351, 2360, 3602, 4702, 4720, 7204, 9005, 9404, 11755, 14408, 18010, 18808, 23510, 28816, 36020, 37616, 47020, 72040, 94040, 106259, 138709, 144080, 188080, 212518, 277418, 425036, 531295, 554836, 693545, 850072, 1062590, 1109672, 1387090, 1700144, 2125180, 2219344, 2774180, 4234151, 4250360, 5548360, 8468302, 8500720, 11096720, 16936604, 21170755, 33873208, 42341510, 67746416, 84683020, 169366040, 249814909, 338732080, 499629818, 999259636, 1249074545, 1998519272, 2498149090, 3997038544, 4996298180, 9992596360, 19985192720]

約数ペア:

[(1, 19985192720), (2, 9992596360), (4, 4996298180), (5, 3997038544), (8, 2498149090), (10, 1998519272), (16, 1249074545), (20, 999259636), (40, 499629818), (59, 338732080), (80, 249814909), (118, 169366040), (236, 84683020), (295, 67746416), (472, 42341510), (590, 33873208), (944, 21170755), (1180, 16936604), (1801, 11096720), (2351, 8500720), (2360, 8468302), (3602, 5548360), (4702, 4250360), (4720, 4234151), (7204, 2774180), (9005, 2219344), (9404, 2125180), (11755, 1700144), (14408, 1387090), (18010, 1109672), (18808, 1062590), (23510, 850072), (28816, 693545), (36020, 554836), (37616, 531295), (47020, 425036), (72040, 277418), (94040, 212518), (106259, 188080), (138709, 144080)]