20911000

素因数分解:

$2^3\times 5^3\times {\mathrm{11}}^1\times {\mathrm{1901}}^1$

素因数の和:1933

約数の個数: 64

約数和(自身を含む): 53408160

約数和(自身を除く): 32497160

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 25, 40, 44, 50, 55, 88, 100, 110, 125, 200, 220, 250, 275, 440, 500, 550, 1000, 1100, 1375, 1901, 2200, 2750, 3802, 5500, 7604, 9505, 11000, 15208, 19010, 20911, 38020, 41822, 47525, 76040, 83644, 95050, 104555, 167288, 190100, 209110, 237625, 380200, 418220, 475250, 522775, 836440, 950500, 1045550, 1901000, 2091100, 2613875, 4182200, 5227750, 10455500, 20911000]

約数ペア:

[(1, 20911000), (2, 10455500), (4, 5227750), (5, 4182200), (8, 2613875), (10, 2091100), (11, 1901000), (20, 1045550), (22, 950500), (25, 836440), (40, 522775), (44, 475250), (50, 418220), (55, 380200), (88, 237625), (100, 209110), (110, 190100), (125, 167288), (200, 104555), (220, 95050), (250, 83644), (275, 76040), (440, 47525), (500, 41822), (550, 38020), (1000, 20911), (1100, 19010), (1375, 15208), (1901, 11000), (2200, 9505), (2750, 7604), (3802, 5500)]