20213655

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{37}}^1\times {\mathrm{43}}^1$

素因数の和:117

約数の個数: 96

約数和(自身を含む): 42696192

約数和(自身を除く): 22482537

約数列:

[1, 3, 5, 7, 11, 15, 21, 33, 35, 37, 43, 55, 77, 105, 111, 121, 129, 165, 185, 215, 231, 259, 301, 363, 385, 407, 473, 555, 605, 645, 777, 847, 903, 1155, 1221, 1295, 1419, 1505, 1591, 1815, 2035, 2365, 2541, 2849, 3311, 3885, 4235, 4477, 4515, 4773, 5203, 6105, 7095, 7955, 8547, 9933, 11137, 12705, 13431, 14245, 15609, 16555, 17501, 22385, 23865, 26015, 31339, 33411, 36421, 42735, 49665, 52503, 55685, 67155, 78045, 87505, 94017, 109263, 122507, 156695, 167055, 182105, 192511, 262515, 367521, 470085, 546315, 577533, 612535, 962555, 1347577, 1837605, 2887665, 4042731, 6737885, 20213655]

約数ペア:

[(1, 20213655), (3, 6737885), (5, 4042731), (7, 2887665), (11, 1837605), (15, 1347577), (21, 962555), (33, 612535), (35, 577533), (37, 546315), (43, 470085), (55, 367521), (77, 262515), (105, 192511), (111, 182105), (121, 167055), (129, 156695), (165, 122507), (185, 109263), (215, 94017), (231, 87505), (259, 78045), (301, 67155), (363, 55685), (385, 52503), (407, 49665), (473, 42735), (555, 36421), (605, 33411), (645, 31339), (777, 26015), (847, 23865), (903, 22385), (1155, 17501), (1221, 16555), (1295, 15609), (1419, 14245), (1505, 13431), (1591, 12705), (1815, 11137), (2035, 9933), (2365, 8547), (2541, 7955), (2849, 7095), (3311, 6105), (3885, 5203), (4235, 4773), (4477, 4515)]