20690775

素因数分解:

$3^3\times 5^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{151}}^1$

素因数の和:206

約数の個数: 96

約数和(自身を含む): 45235200

約数和(自身を除く): 24544425

約数列:

[1, 3, 5, 7, 9, 15, 21, 25, 27, 29, 35, 45, 63, 75, 87, 105, 135, 145, 151, 175, 189, 203, 225, 261, 315, 435, 453, 525, 609, 675, 725, 755, 783, 945, 1015, 1057, 1305, 1359, 1575, 1827, 2175, 2265, 3045, 3171, 3775, 3915, 4077, 4379, 4725, 5075, 5285, 5481, 6525, 6795, 9135, 9513, 11325, 13137, 15225, 15855, 19575, 20385, 21895, 26425, 27405, 28539, 30653, 33975, 39411, 45675, 47565, 65685, 79275, 91959, 101925, 109475, 118233, 137025, 142695, 153265, 197055, 237825, 275877, 328425, 459795, 591165, 713475, 766325, 827631, 985275, 1379385, 2298975, 2955825, 4138155, 6896925, 20690775]

約数ペア:

[(1, 20690775), (3, 6896925), (5, 4138155), (7, 2955825), (9, 2298975), (15, 1379385), (21, 985275), (25, 827631), (27, 766325), (29, 713475), (35, 591165), (45, 459795), (63, 328425), (75, 275877), (87, 237825), (105, 197055), (135, 153265), (145, 142695), (151, 137025), (175, 118233), (189, 109475), (203, 101925), (225, 91959), (261, 79275), (315, 65685), (435, 47565), (453, 45675), (525, 39411), (609, 33975), (675, 30653), (725, 28539), (755, 27405), (783, 26425), (945, 21895), (1015, 20385), (1057, 19575), (1305, 15855), (1359, 15225), (1575, 13137), (1827, 11325), (2175, 9513), (2265, 9135), (3045, 6795), (3171, 6525), (3775, 5481), (3915, 5285), (4077, 5075), (4379, 4725)]