81165650

素因数分解:

$2^1\times 5^2\times {\mathrm{17}}^2\times {\mathrm{41}}^1\times {\mathrm{137}}^1$

素因数の和:224

約数の個数: 72

約数和(自身を含む): 165481596

約数和(自身を除く): 84315946

約数列:

[1, 2, 5, 10, 17, 25, 34, 41, 50, 82, 85, 137, 170, 205, 274, 289, 410, 425, 578, 685, 697, 850, 1025, 1370, 1394, 1445, 2050, 2329, 2890, 3425, 3485, 4658, 5617, 6850, 6970, 7225, 11234, 11645, 11849, 14450, 17425, 23290, 23698, 28085, 34850, 39593, 56170, 58225, 59245, 79186, 95489, 116450, 118490, 140425, 190978, 197965, 280850, 296225, 395930, 477445, 592450, 954890, 989825, 1623313, 1979650, 2387225, 3246626, 4774450, 8116565, 16233130, 40582825, 81165650]

約数ペア:

[(1, 81165650), (2, 40582825), (5, 16233130), (10, 8116565), (17, 4774450), (25, 3246626), (34, 2387225), (41, 1979650), (50, 1623313), (82, 989825), (85, 954890), (137, 592450), (170, 477445), (205, 395930), (274, 296225), (289, 280850), (410, 197965), (425, 190978), (578, 140425), (685, 118490), (697, 116450), (850, 95489), (1025, 79186), (1370, 59245), (1394, 58225), (1445, 56170), (2050, 39593), (2329, 34850), (2890, 28085), (3425, 23698), (3485, 23290), (4658, 17425), (5617, 14450), (6850, 11849), (6970, 11645), (7225, 11234)]