21000359574

素因数分解:

$2^1\times 3^2\times {\mathrm{31}}^1\times {\mathrm{127}}^1\times {\mathrm{401}}^1\times {\mathrm{739}}^1$

素因数の和:1306

約数の個数: 96

約数和(自身を含む): 47520645120

約数和(自身を除く): 26520285546

約数列:

[1, 2, 3, 6, 9, 18, 31, 62, 93, 127, 186, 254, 279, 381, 401, 558, 739, 762, 802, 1143, 1203, 1478, 2217, 2286, 2406, 3609, 3937, 4434, 6651, 7218, 7874, 11811, 12431, 13302, 22909, 23622, 24862, 35433, 37293, 45818, 50927, 68727, 70866, 74586, 93853, 101854, 111879, 137454, 152781, 187706, 206181, 223758, 281559, 296339, 305562, 412362, 458343, 563118, 592678, 844677, 889017, 916686, 1578737, 1689354, 1778034, 2667051, 2909443, 3157474, 4736211, 5334102, 5818886, 8728329, 9186509, 9472422, 14208633, 17456658, 18373018, 26184987, 27559527, 28417266, 37635053, 52369974, 55119054, 75270106, 82678581, 112905159, 165357162, 225810318, 338715477, 677430954, 1166686643, 2333373286, 3500059929, 7000119858, 10500179787, 21000359574]

約数ペア:

[(1, 21000359574), (2, 10500179787), (3, 7000119858), (6, 3500059929), (9, 2333373286), (18, 1166686643), (31, 677430954), (62, 338715477), (93, 225810318), (127, 165357162), (186, 112905159), (254, 82678581), (279, 75270106), (381, 55119054), (401, 52369974), (558, 37635053), (739, 28417266), (762, 27559527), (802, 26184987), (1143, 18373018), (1203, 17456658), (1478, 14208633), (2217, 9472422), (2286, 9186509), (2406, 8728329), (3609, 5818886), (3937, 5334102), (4434, 4736211), (6651, 3157474), (7218, 2909443), (7874, 2667051), (11811, 1778034), (12431, 1689354), (13302, 1578737), (22909, 916686), (23622, 889017), (24862, 844677), (35433, 592678), (37293, 563118), (45818, 458343), (50927, 412362), (68727, 305562), (70866, 296339), (74586, 281559), (93853, 223758), (101854, 206181), (111879, 187706), (137454, 152781)]