1280352380

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{263}}^1\times {\mathrm{5179}}^1$

素因数の和:5498

約数の個数: 48

約数和(自身を含む): 2756920320

約数和(自身を除く): 1476567940

約数列:

[1, 2, 4, 5, 10, 20, 47, 94, 188, 235, 263, 470, 526, 940, 1052, 1315, 2630, 5179, 5260, 10358, 12361, 20716, 24722, 25895, 49444, 51790, 61805, 103580, 123610, 243413, 247220, 486826, 973652, 1217065, 1362077, 2434130, 2724154, 4868260, 5448308, 6810385, 13620770, 27241540, 64017619, 128035238, 256070476, 320088095, 640176190, 1280352380]

約数ペア:

[(1, 1280352380), (2, 640176190), (4, 320088095), (5, 256070476), (10, 128035238), (20, 64017619), (47, 27241540), (94, 13620770), (188, 6810385), (235, 5448308), (263, 4868260), (470, 2724154), (526, 2434130), (940, 1362077), (1052, 1217065), (1315, 973652), (2630, 486826), (5179, 247220), (5260, 243413), (10358, 123610), (12361, 103580), (20716, 61805), (24722, 51790), (25895, 49444)]