71849840

素因数分解:

$2^4\times 5^1\times {\mathrm{47}}^1\times {\mathrm{97}}^1\times {\mathrm{197}}^1$

素因数の和:354

約数の個数: 80

約数和(自身を含む): 173238912

約数和(自身を除く): 101389072

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 47, 80, 94, 97, 188, 194, 197, 235, 376, 388, 394, 470, 485, 752, 776, 788, 940, 970, 985, 1552, 1576, 1880, 1940, 1970, 3152, 3760, 3880, 3940, 4559, 7760, 7880, 9118, 9259, 15760, 18236, 18518, 19109, 22795, 36472, 37036, 38218, 45590, 46295, 72944, 74072, 76436, 91180, 92590, 95545, 148144, 152872, 182360, 185180, 191090, 305744, 364720, 370360, 382180, 740720, 764360, 898123, 1528720, 1796246, 3592492, 4490615, 7184984, 8981230, 14369968, 17962460, 35924920, 71849840]

約数ペア:

[(1, 71849840), (2, 35924920), (4, 17962460), (5, 14369968), (8, 8981230), (10, 7184984), (16, 4490615), (20, 3592492), (40, 1796246), (47, 1528720), (80, 898123), (94, 764360), (97, 740720), (188, 382180), (194, 370360), (197, 364720), (235, 305744), (376, 191090), (388, 185180), (394, 182360), (470, 152872), (485, 148144), (752, 95545), (776, 92590), (788, 91180), (940, 76436), (970, 74072), (985, 72944), (1552, 46295), (1576, 45590), (1880, 38218), (1940, 37036), (1970, 36472), (3152, 22795), (3760, 19109), (3880, 18518), (3940, 18236), (4559, 15760), (7760, 9259), (7880, 9118)]