20657028

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{43}}^2$

素因数の和:126

約数の個数: 108

約数和(自身を含む): 60424560

約数和(自身を除く): 39767532

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 19, 21, 28, 38, 42, 43, 49, 57, 76, 84, 86, 98, 114, 129, 133, 147, 172, 196, 228, 258, 266, 294, 301, 399, 516, 532, 588, 602, 798, 817, 903, 931, 1204, 1596, 1634, 1806, 1849, 1862, 2107, 2451, 2793, 3268, 3612, 3698, 3724, 4214, 4902, 5547, 5586, 5719, 6321, 7396, 8428, 9804, 11094, 11172, 11438, 12642, 12943, 17157, 22188, 22876, 25284, 25886, 34314, 35131, 38829, 40033, 51772, 68628, 70262, 77658, 80066, 90601, 105393, 120099, 140524, 155316, 160132, 181202, 210786, 240198, 245917, 271803, 362404, 421572, 480396, 491834, 543606, 737751, 983668, 1087212, 1475502, 1721419, 2951004, 3442838, 5164257, 6885676, 10328514, 20657028]

約数ペア:

[(1, 20657028), (2, 10328514), (3, 6885676), (4, 5164257), (6, 3442838), (7, 2951004), (12, 1721419), (14, 1475502), (19, 1087212), (21, 983668), (28, 737751), (38, 543606), (42, 491834), (43, 480396), (49, 421572), (57, 362404), (76, 271803), (84, 245917), (86, 240198), (98, 210786), (114, 181202), (129, 160132), (133, 155316), (147, 140524), (172, 120099), (196, 105393), (228, 90601), (258, 80066), (266, 77658), (294, 70262), (301, 68628), (399, 51772), (516, 40033), (532, 38829), (588, 35131), (602, 34314), (798, 25886), (817, 25284), (903, 22876), (931, 22188), (1204, 17157), (1596, 12943), (1634, 12642), (1806, 11438), (1849, 11172), (1862, 11094), (2107, 9804), (2451, 8428), (2793, 7396), (3268, 6321), (3612, 5719), (3698, 5586), (3724, 5547), (4214, 4902)]