28994427

素因数分解:

$3^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{139}}^1$

素因数の和:213

約数の個数: 72

約数和(自身を含む): 54774720

約数和(自身を除く): 25780293

約数列:

[1, 3, 7, 9, 11, 21, 33, 43, 49, 63, 77, 99, 129, 139, 147, 231, 301, 387, 417, 441, 473, 539, 693, 903, 973, 1251, 1419, 1529, 1617, 2107, 2709, 2919, 3311, 4257, 4587, 4851, 5977, 6321, 6811, 8757, 9933, 10703, 13761, 17931, 18963, 20433, 23177, 29799, 32109, 41839, 53793, 61299, 65747, 69531, 74921, 96327, 125517, 197241, 208593, 224763, 292873, 376551, 460229, 591723, 674289, 878619, 1380687, 2635857, 3221603, 4142061, 9664809, 28994427]

約数ペア:

[(1, 28994427), (3, 9664809), (7, 4142061), (9, 3221603), (11, 2635857), (21, 1380687), (33, 878619), (43, 674289), (49, 591723), (63, 460229), (77, 376551), (99, 292873), (129, 224763), (139, 208593), (147, 197241), (231, 125517), (301, 96327), (387, 74921), (417, 69531), (441, 65747), (473, 61299), (539, 53793), (693, 41839), (903, 32109), (973, 29799), (1251, 23177), (1419, 20433), (1529, 18963), (1617, 17931), (2107, 13761), (2709, 10703), (2919, 9933), (3311, 8757), (4257, 6811), (4587, 6321), (4851, 5977)]