21875220

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{2293}}^1$

素因数の和:2361

約数の個数: 72

約数和(自身を含む): 67636296

約数和(自身を除く): 45761076

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 53, 60, 90, 106, 159, 180, 212, 265, 318, 477, 530, 636, 795, 954, 1060, 1590, 1908, 2293, 2385, 3180, 4586, 4770, 6879, 9172, 9540, 11465, 13758, 20637, 22930, 27516, 34395, 41274, 45860, 68790, 82548, 103185, 121529, 137580, 206370, 243058, 364587, 412740, 486116, 607645, 729174, 1093761, 1215290, 1458348, 1822935, 2187522, 2430580, 3645870, 4375044, 5468805, 7291740, 10937610, 21875220]

約数ペア:

[(1, 21875220), (2, 10937610), (3, 7291740), (4, 5468805), (5, 4375044), (6, 3645870), (9, 2430580), (10, 2187522), (12, 1822935), (15, 1458348), (18, 1215290), (20, 1093761), (30, 729174), (36, 607645), (45, 486116), (53, 412740), (60, 364587), (90, 243058), (106, 206370), (159, 137580), (180, 121529), (212, 103185), (265, 82548), (318, 68790), (477, 45860), (530, 41274), (636, 34395), (795, 27516), (954, 22930), (1060, 20637), (1590, 13758), (1908, 11465), (2293, 9540), (2385, 9172), (3180, 6879), (4586, 4770)]