20668725

素因数分解:

$3^2\times 5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{1193}}^1$

素因数の和:1227

約数の個数: 72

約数和(自身を含む): 46193472

約数和(自身を除く): 25524747

約数列:

[1, 3, 5, 7, 9, 11, 15, 21, 25, 33, 35, 45, 55, 63, 75, 77, 99, 105, 165, 175, 225, 231, 275, 315, 385, 495, 525, 693, 825, 1155, 1193, 1575, 1925, 2475, 3465, 3579, 5775, 5965, 8351, 10737, 13123, 17325, 17895, 25053, 29825, 39369, 41755, 53685, 65615, 75159, 89475, 91861, 118107, 125265, 196845, 208775, 268425, 275583, 328075, 375795, 459305, 590535, 626325, 826749, 984225, 1377915, 1878975, 2296525, 2952675, 4133745, 6889575, 20668725]

約数ペア:

[(1, 20668725), (3, 6889575), (5, 4133745), (7, 2952675), (9, 2296525), (11, 1878975), (15, 1377915), (21, 984225), (25, 826749), (33, 626325), (35, 590535), (45, 459305), (55, 375795), (63, 328075), (75, 275583), (77, 268425), (99, 208775), (105, 196845), (165, 125265), (175, 118107), (225, 91861), (231, 89475), (275, 75159), (315, 65615), (385, 53685), (495, 41755), (525, 39369), (693, 29825), (825, 25053), (1155, 17895), (1193, 17325), (1575, 13123), (1925, 10737), (2475, 8351), (3465, 5965), (3579, 5775)]