18784808

素因数分解:

$2^3\times 7^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{269}}^1$

素因数の和:354

約数の個数: 64

約数和(自身を含む): 42768000

約数和(自身を除く): 23983192

約数列:

[1, 2, 4, 7, 8, 14, 28, 29, 43, 56, 58, 86, 116, 172, 203, 232, 269, 301, 344, 406, 538, 602, 812, 1076, 1204, 1247, 1624, 1883, 2152, 2408, 2494, 3766, 4988, 7532, 7801, 8729, 9976, 11567, 15064, 15602, 17458, 23134, 31204, 34916, 46268, 54607, 62408, 69832, 80969, 92536, 109214, 161938, 218428, 323876, 335443, 436856, 647752, 670886, 1341772, 2348101, 2683544, 4696202, 9392404, 18784808]

約数ペア:

[(1, 18784808), (2, 9392404), (4, 4696202), (7, 2683544), (8, 2348101), (14, 1341772), (28, 670886), (29, 647752), (43, 436856), (56, 335443), (58, 323876), (86, 218428), (116, 161938), (172, 109214), (203, 92536), (232, 80969), (269, 69832), (301, 62408), (344, 54607), (406, 46268), (538, 34916), (602, 31204), (812, 23134), (1076, 17458), (1204, 15602), (1247, 15064), (1624, 11567), (1883, 9976), (2152, 8729), (2408, 7801), (2494, 7532), (3766, 4988)]