20731700

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{401}}^1$

素因数の和:473

約数の個数: 72

約数和(自身を含む): 50246784

約数和(自身を除く): 29515084

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 47, 50, 55, 94, 100, 110, 188, 220, 235, 275, 401, 470, 517, 550, 802, 940, 1034, 1100, 1175, 1604, 2005, 2068, 2350, 2585, 4010, 4411, 4700, 5170, 8020, 8822, 10025, 10340, 12925, 17644, 18847, 20050, 22055, 25850, 37694, 40100, 44110, 51700, 75388, 88220, 94235, 110275, 188470, 207317, 220550, 376940, 414634, 441100, 471175, 829268, 942350, 1036585, 1884700, 2073170, 4146340, 5182925, 10365850, 20731700]

約数ペア:

[(1, 20731700), (2, 10365850), (4, 5182925), (5, 4146340), (10, 2073170), (11, 1884700), (20, 1036585), (22, 942350), (25, 829268), (44, 471175), (47, 441100), (50, 414634), (55, 376940), (94, 220550), (100, 207317), (110, 188470), (188, 110275), (220, 94235), (235, 88220), (275, 75388), (401, 51700), (470, 44110), (517, 40100), (550, 37694), (802, 25850), (940, 22055), (1034, 20050), (1100, 18847), (1175, 17644), (1604, 12925), (2005, 10340), (2068, 10025), (2350, 8822), (2585, 8020), (4010, 5170), (4411, 4700)]