40681840

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{79}}^1\times {\mathrm{157}}^1$

素因数の和:290

約数の個数: 80

約数和(自身を含む): 98743680

約数和(自身を除く): 58061840

約数列:

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

約数ペア:

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