81363680

素因数分解:

$2^5\times 5^1\times {\mathrm{41}}^1\times {\mathrm{79}}^1\times {\mathrm{157}}^1$

素因数の和:292

約数の個数: 96

約数和(自身を含む): 200672640

約数和(自身を除く): 119308960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 41, 79, 80, 82, 157, 158, 160, 164, 205, 314, 316, 328, 395, 410, 628, 632, 656, 785, 790, 820, 1256, 1264, 1312, 1570, 1580, 1640, 2512, 2528, 3140, 3160, 3239, 3280, 5024, 6280, 6320, 6437, 6478, 6560, 12403, 12560, 12640, 12874, 12956, 16195, 24806, 25120, 25748, 25912, 32185, 32390, 49612, 51496, 51824, 62015, 64370, 64780, 99224, 102992, 103648, 124030, 128740, 129560, 198448, 205984, 248060, 257480, 259120, 396896, 496120, 508523, 514960, 518240, 992240, 1017046, 1029920, 1984480, 2034092, 2542615, 4068184, 5085230, 8136368, 10170460, 16272736, 20340920, 40681840, 81363680]

約数ペア:

[(1, 81363680), (2, 40681840), (4, 20340920), (5, 16272736), (8, 10170460), (10, 8136368), (16, 5085230), (20, 4068184), (32, 2542615), (40, 2034092), (41, 1984480), (79, 1029920), (80, 1017046), (82, 992240), (157, 518240), (158, 514960), (160, 508523), (164, 496120), (205, 396896), (314, 259120), (316, 257480), (328, 248060), (395, 205984), (410, 198448), (628, 129560), (632, 128740), (656, 124030), (785, 103648), (790, 102992), (820, 99224), (1256, 64780), (1264, 64370), (1312, 62015), (1570, 51824), (1580, 51496), (1640, 49612), (2512, 32390), (2528, 32185), (3140, 25912), (3160, 25748), (3239, 25120), (3280, 24806), (5024, 16195), (6280, 12956), (6320, 12874), (6437, 12640), (6478, 12560), (6560, 12403)]