81405690

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{271}}^1$

素因数の和:348

約数の個数: 128

約数和(自身を含む): 225607680

約数和(自身を除く): 144201990

約数列:

[1, 2, 3, 5, 6, 10, 15, 17, 19, 30, 31, 34, 38, 51, 57, 62, 85, 93, 95, 102, 114, 155, 170, 186, 190, 255, 271, 285, 310, 323, 465, 510, 527, 542, 570, 589, 646, 813, 930, 969, 1054, 1178, 1355, 1581, 1615, 1626, 1767, 1938, 2635, 2710, 2945, 3162, 3230, 3534, 4065, 4607, 4845, 5149, 5270, 5890, 7905, 8130, 8401, 8835, 9214, 9690, 10013, 10298, 13821, 15447, 15810, 16802, 17670, 20026, 23035, 25203, 25745, 27642, 30039, 30894, 42005, 46070, 50065, 50406, 51490, 60078, 69105, 77235, 84010, 87533, 100130, 126015, 138210, 142817, 150195, 154470, 159619, 175066, 252030, 262599, 285634, 300390, 319238, 428451, 437665, 478857, 525198, 714085, 798095, 856902, 875330, 957714, 1312995, 1428170, 1596190, 2142255, 2394285, 2625990, 2713523, 4284510, 4788570, 5427046, 8140569, 13567615, 16281138, 27135230, 40702845, 81405690]

約数ペア:

[(1, 81405690), (2, 40702845), (3, 27135230), (5, 16281138), (6, 13567615), (10, 8140569), (15, 5427046), (17, 4788570), (19, 4284510), (30, 2713523), (31, 2625990), (34, 2394285), (38, 2142255), (51, 1596190), (57, 1428170), (62, 1312995), (85, 957714), (93, 875330), (95, 856902), (102, 798095), (114, 714085), (155, 525198), (170, 478857), (186, 437665), (190, 428451), (255, 319238), (271, 300390), (285, 285634), (310, 262599), (323, 252030), (465, 175066), (510, 159619), (527, 154470), (542, 150195), (570, 142817), (589, 138210), (646, 126015), (813, 100130), (930, 87533), (969, 84010), (1054, 77235), (1178, 69105), (1355, 60078), (1581, 51490), (1615, 50406), (1626, 50065), (1767, 46070), (1938, 42005), (2635, 30894), (2710, 30039), (2945, 27642), (3162, 25745), (3230, 25203), (3534, 23035), (4065, 20026), (4607, 17670), (4845, 16802), (5149, 15810), (5270, 15447), (5890, 13821), (7905, 10298), (8130, 10013), (8401, 9690), (8835, 9214)]