81437800

素因数分解:

$2^3\times 5^2\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{739}}^1$

素因数の和:803

約数の個数: 96

約数和(自身を含む): 206460000

約数和(自身を除く): 125022200

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 25, 29, 38, 40, 50, 58, 76, 95, 100, 116, 145, 152, 190, 200, 232, 290, 380, 475, 551, 580, 725, 739, 760, 950, 1102, 1160, 1450, 1478, 1900, 2204, 2755, 2900, 2956, 3695, 3800, 4408, 5510, 5800, 5912, 7390, 11020, 13775, 14041, 14780, 18475, 21431, 22040, 27550, 28082, 29560, 36950, 42862, 55100, 56164, 70205, 73900, 85724, 107155, 110200, 112328, 140410, 147800, 171448, 214310, 280820, 351025, 407189, 428620, 535775, 561640, 702050, 814378, 857240, 1071550, 1404100, 1628756, 2035945, 2143100, 2808200, 3257512, 4071890, 4286200, 8143780, 10179725, 16287560, 20359450, 40718900, 81437800]

約数ペア:

[(1, 81437800), (2, 40718900), (4, 20359450), (5, 16287560), (8, 10179725), (10, 8143780), (19, 4286200), (20, 4071890), (25, 3257512), (29, 2808200), (38, 2143100), (40, 2035945), (50, 1628756), (58, 1404100), (76, 1071550), (95, 857240), (100, 814378), (116, 702050), (145, 561640), (152, 535775), (190, 428620), (200, 407189), (232, 351025), (290, 280820), (380, 214310), (475, 171448), (551, 147800), (580, 140410), (725, 112328), (739, 110200), (760, 107155), (950, 85724), (1102, 73900), (1160, 70205), (1450, 56164), (1478, 55100), (1900, 42862), (2204, 36950), (2755, 29560), (2900, 28082), (2956, 27550), (3695, 22040), (3800, 21431), (4408, 18475), (5510, 14780), (5800, 14041), (5912, 13775), (7390, 11020)]