31249395

素因数分解:

$3^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{131}}^1$

素因数の和:198

約数の個数: 80

約数和(自身を含む): 61332480

約数和(自身を除く): 30083085

約数列:

[1, 3, 5, 9, 15, 19, 27, 31, 45, 57, 81, 93, 95, 131, 135, 155, 171, 279, 285, 393, 405, 465, 513, 589, 655, 837, 855, 1179, 1395, 1539, 1767, 1965, 2489, 2511, 2565, 2945, 3537, 4061, 4185, 5301, 5895, 7467, 7695, 8835, 10611, 12183, 12445, 12555, 15903, 17685, 20305, 22401, 26505, 36549, 37335, 47709, 53055, 60915, 67203, 77159, 79515, 109647, 112005, 182745, 201609, 231477, 238545, 328941, 336015, 385795, 548235, 694431, 1008045, 1157385, 1644705, 2083293, 3472155, 6249879, 10416465, 31249395]

約数ペア:

[(1, 31249395), (3, 10416465), (5, 6249879), (9, 3472155), (15, 2083293), (19, 1644705), (27, 1157385), (31, 1008045), (45, 694431), (57, 548235), (81, 385795), (93, 336015), (95, 328941), (131, 238545), (135, 231477), (155, 201609), (171, 182745), (279, 112005), (285, 109647), (393, 79515), (405, 77159), (465, 67203), (513, 60915), (589, 53055), (655, 47709), (837, 37335), (855, 36549), (1179, 26505), (1395, 22401), (1539, 20305), (1767, 17685), (1965, 15903), (2489, 12555), (2511, 12445), (2565, 12183), (2945, 10611), (3537, 8835), (4061, 7695), (4185, 7467), (5301, 5895)]