20218275

素因数分解:

$3^3\times 5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{389}}^1$

素因数の和:426

約数の個数: 96

約数和(自身を含む): 46425600

約数和(自身を除く): 26207325

約数列:

[1, 3, 5, 7, 9, 11, 15, 21, 25, 27, 33, 35, 45, 55, 63, 75, 77, 99, 105, 135, 165, 175, 189, 225, 231, 275, 297, 315, 385, 389, 495, 525, 675, 693, 825, 945, 1155, 1167, 1485, 1575, 1925, 1945, 2079, 2475, 2723, 3465, 3501, 4279, 4725, 5775, 5835, 7425, 8169, 9725, 10395, 10503, 12837, 13615, 17325, 17505, 21395, 24507, 29175, 29953, 38511, 40845, 51975, 52515, 64185, 68075, 73521, 87525, 89859, 106975, 115533, 122535, 149765, 192555, 204225, 262575, 269577, 320925, 367605, 449295, 577665, 612675, 748825, 808731, 962775, 1347885, 1838025, 2246475, 2888325, 4043655, 6739425, 20218275]

約数ペア:

[(1, 20218275), (3, 6739425), (5, 4043655), (7, 2888325), (9, 2246475), (11, 1838025), (15, 1347885), (21, 962775), (25, 808731), (27, 748825), (33, 612675), (35, 577665), (45, 449295), (55, 367605), (63, 320925), (75, 269577), (77, 262575), (99, 204225), (105, 192555), (135, 149765), (165, 122535), (175, 115533), (189, 106975), (225, 89859), (231, 87525), (275, 73521), (297, 68075), (315, 64185), (385, 52515), (389, 51975), (495, 40845), (525, 38511), (675, 29953), (693, 29175), (825, 24507), (945, 21395), (1155, 17505), (1167, 17325), (1485, 13615), (1575, 12837), (1925, 10503), (1945, 10395), (2079, 9725), (2475, 8169), (2723, 7425), (3465, 5835), (3501, 5775), (4279, 4725)]