21335000

素因数分解:

$2^3\times 5^4\times {\mathrm{17}}^1\times {\mathrm{251}}^1$

素因数の和:294

約数の個数: 80

約数和(自身を含む): 53139240

約数和(自身を除く): 31804240

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 25, 34, 40, 50, 68, 85, 100, 125, 136, 170, 200, 250, 251, 340, 425, 500, 502, 625, 680, 850, 1000, 1004, 1250, 1255, 1700, 2008, 2125, 2500, 2510, 3400, 4250, 4267, 5000, 5020, 6275, 8500, 8534, 10040, 10625, 12550, 17000, 17068, 21250, 21335, 25100, 31375, 34136, 42500, 42670, 50200, 62750, 85000, 85340, 106675, 125500, 156875, 170680, 213350, 251000, 313750, 426700, 533375, 627500, 853400, 1066750, 1255000, 2133500, 2666875, 4267000, 5333750, 10667500, 21335000]

約数ペア:

[(1, 21335000), (2, 10667500), (4, 5333750), (5, 4267000), (8, 2666875), (10, 2133500), (17, 1255000), (20, 1066750), (25, 853400), (34, 627500), (40, 533375), (50, 426700), (68, 313750), (85, 251000), (100, 213350), (125, 170680), (136, 156875), (170, 125500), (200, 106675), (250, 85340), (251, 85000), (340, 62750), (425, 50200), (500, 42670), (502, 42500), (625, 34136), (680, 31375), (850, 25100), (1000, 21335), (1004, 21250), (1250, 17068), (1255, 17000), (1700, 12550), (2008, 10625), (2125, 10040), (2500, 8534), (2510, 8500), (3400, 6275), (4250, 5020), (4267, 5000)]