21845000

素因数分解:

$2^3\times 5^4\times {\mathrm{17}}^1\times {\mathrm{257}}^1$

素因数の和:300

約数の個数: 80

約数和(自身を含む): 54404460

約数和(自身を除く): 32559460

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 25, 34, 40, 50, 68, 85, 100, 125, 136, 170, 200, 250, 257, 340, 425, 500, 514, 625, 680, 850, 1000, 1028, 1250, 1285, 1700, 2056, 2125, 2500, 2570, 3400, 4250, 4369, 5000, 5140, 6425, 8500, 8738, 10280, 10625, 12850, 17000, 17476, 21250, 21845, 25700, 32125, 34952, 42500, 43690, 51400, 64250, 85000, 87380, 109225, 128500, 160625, 174760, 218450, 257000, 321250, 436900, 546125, 642500, 873800, 1092250, 1285000, 2184500, 2730625, 4369000, 5461250, 10922500, 21845000]

約数ペア:

[(1, 21845000), (2, 10922500), (4, 5461250), (5, 4369000), (8, 2730625), (10, 2184500), (17, 1285000), (20, 1092250), (25, 873800), (34, 642500), (40, 546125), (50, 436900), (68, 321250), (85, 257000), (100, 218450), (125, 174760), (136, 160625), (170, 128500), (200, 109225), (250, 87380), (257, 85000), (340, 64250), (425, 51400), (500, 43690), (514, 42500), (625, 34952), (680, 32125), (850, 25700), (1000, 21845), (1028, 21250), (1250, 17476), (1285, 17000), (1700, 12850), (2056, 10625), (2125, 10280), (2500, 8738), (2570, 8500), (3400, 6425), (4250, 5140), (4369, 5000)]