21117195

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{1153}}^1$

素因数の和:1212

約数の個数: 48

約数和(自身を含む): 41045472

約数和(自身を除く): 19928277

約数列:

[1, 3, 5, 9, 11, 15, 33, 37, 45, 55, 99, 111, 165, 185, 333, 407, 495, 555, 1153, 1221, 1665, 2035, 3459, 3663, 5765, 6105, 10377, 12683, 17295, 18315, 38049, 42661, 51885, 63415, 114147, 127983, 190245, 213305, 383949, 469271, 570735, 639915, 1407813, 1919745, 2346355, 4223439, 7039065, 21117195]

約数ペア:

[(1, 21117195), (3, 7039065), (5, 4223439), (9, 2346355), (11, 1919745), (15, 1407813), (33, 639915), (37, 570735), (45, 469271), (55, 383949), (99, 213305), (111, 190245), (165, 127983), (185, 114147), (333, 63415), (407, 51885), (495, 42661), (555, 38049), (1153, 18315), (1221, 17295), (1665, 12683), (2035, 10377), (3459, 6105), (3663, 5765)]