21447965

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{113}}^1$

素因数の和:182

約数の個数: 64

約数和(自身を含む): 35458560

約数和(自身を除く): 14010595

約数列:

[1, 5, 7, 11, 17, 29, 35, 55, 77, 85, 113, 119, 145, 187, 203, 319, 385, 493, 565, 595, 791, 935, 1015, 1243, 1309, 1595, 1921, 2233, 2465, 3277, 3451, 3955, 5423, 6215, 6545, 8701, 9605, 11165, 13447, 16385, 17255, 21131, 22939, 27115, 36047, 37961, 43505, 55709, 67235, 105655, 114695, 147917, 180235, 189805, 252329, 278545, 389963, 612799, 739585, 1261645, 1949815, 3063995, 4289593, 21447965]

約数ペア:

[(1, 21447965), (5, 4289593), (7, 3063995), (11, 1949815), (17, 1261645), (29, 739585), (35, 612799), (55, 389963), (77, 278545), (85, 252329), (113, 189805), (119, 180235), (145, 147917), (187, 114695), (203, 105655), (319, 67235), (385, 55709), (493, 43505), (565, 37961), (595, 36047), (791, 27115), (935, 22939), (1015, 21131), (1243, 17255), (1309, 16385), (1595, 13447), (1921, 11165), (2233, 9605), (2465, 8701), (3277, 6545), (3451, 6215), (3955, 5423)]