19982480

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{2099}}^1$

素因数の和:2136

約数の個数: 80

約数和(自身を含む): 56246400

約数和(自身を除く): 36263920

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 17, 20, 28, 34, 35, 40, 56, 68, 70, 80, 85, 112, 119, 136, 140, 170, 238, 272, 280, 340, 476, 560, 595, 680, 952, 1190, 1360, 1904, 2099, 2380, 4198, 4760, 8396, 9520, 10495, 14693, 16792, 20990, 29386, 33584, 35683, 41980, 58772, 71366, 73465, 83960, 117544, 142732, 146930, 167920, 178415, 235088, 249781, 285464, 293860, 356830, 499562, 570928, 587720, 713660, 999124, 1175440, 1248905, 1427320, 1998248, 2497810, 2854640, 3996496, 4995620, 9991240, 19982480]

約数ペア:

[(1, 19982480), (2, 9991240), (4, 4995620), (5, 3996496), (7, 2854640), (8, 2497810), (10, 1998248), (14, 1427320), (16, 1248905), (17, 1175440), (20, 999124), (28, 713660), (34, 587720), (35, 570928), (40, 499562), (56, 356830), (68, 293860), (70, 285464), (80, 249781), (85, 235088), (112, 178415), (119, 167920), (136, 146930), (140, 142732), (170, 117544), (238, 83960), (272, 73465), (280, 71366), (340, 58772), (476, 41980), (560, 35683), (595, 33584), (680, 29386), (952, 20990), (1190, 16792), (1360, 14693), (1904, 10495), (2099, 9520), (2380, 8396), (4198, 4760)]