19775420

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{1187}}^1$

素因数の和:1227

約数の個数: 72

約数和(自身を含む): 51193296

約数和(自身を除く): 31417876

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 20, 28, 34, 35, 49, 68, 70, 85, 98, 119, 140, 170, 196, 238, 245, 340, 476, 490, 595, 833, 980, 1187, 1190, 1666, 2374, 2380, 3332, 4165, 4748, 5935, 8309, 8330, 11870, 16618, 16660, 20179, 23740, 33236, 40358, 41545, 58163, 80716, 83090, 100895, 116326, 141253, 166180, 201790, 232652, 282506, 290815, 403580, 565012, 581630, 706265, 988771, 1163260, 1412530, 1977542, 2825060, 3955084, 4943855, 9887710, 19775420]

約数ペア:

[(1, 19775420), (2, 9887710), (4, 4943855), (5, 3955084), (7, 2825060), (10, 1977542), (14, 1412530), (17, 1163260), (20, 988771), (28, 706265), (34, 581630), (35, 565012), (49, 403580), (68, 290815), (70, 282506), (85, 232652), (98, 201790), (119, 166180), (140, 141253), (170, 116326), (196, 100895), (238, 83090), (245, 80716), (340, 58163), (476, 41545), (490, 40358), (595, 33236), (833, 23740), (980, 20179), (1187, 16660), (1190, 16618), (1666, 11870), (2374, 8330), (2380, 8309), (3332, 5935), (4165, 4748)]