81257440

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{137}}^1\times {\mathrm{337}}^1$

素因数の和:500

約数の個数: 96

約数和(自身を含む): 211577184

約数和(自身を除く): 130319744

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 80, 88, 110, 137, 160, 176, 220, 274, 337, 352, 440, 548, 674, 685, 880, 1096, 1348, 1370, 1507, 1685, 1760, 2192, 2696, 2740, 3014, 3370, 3707, 4384, 5392, 5480, 6028, 6740, 7414, 7535, 10784, 10960, 12056, 13480, 14828, 15070, 18535, 21920, 24112, 26960, 29656, 30140, 37070, 46169, 48224, 53920, 59312, 60280, 74140, 92338, 118624, 120560, 148280, 184676, 230845, 241120, 296560, 369352, 461690, 507859, 593120, 738704, 923380, 1015718, 1477408, 1846760, 2031436, 2539295, 3693520, 4062872, 5078590, 7387040, 8125744, 10157180, 16251488, 20314360, 40628720, 81257440]

約数ペア:

[(1, 81257440), (2, 40628720), (4, 20314360), (5, 16251488), (8, 10157180), (10, 8125744), (11, 7387040), (16, 5078590), (20, 4062872), (22, 3693520), (32, 2539295), (40, 2031436), (44, 1846760), (55, 1477408), (80, 1015718), (88, 923380), (110, 738704), (137, 593120), (160, 507859), (176, 461690), (220, 369352), (274, 296560), (337, 241120), (352, 230845), (440, 184676), (548, 148280), (674, 120560), (685, 118624), (880, 92338), (1096, 74140), (1348, 60280), (1370, 59312), (1507, 53920), (1685, 48224), (1760, 46169), (2192, 37070), (2696, 30140), (2740, 29656), (3014, 26960), (3370, 24112), (3707, 21920), (4384, 18535), (5392, 15070), (5480, 14828), (6028, 13480), (6740, 12056), (7414, 10960), (7535, 10784)]