16921443

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{139}}^1$

素因数の和:208

約数の個数: 64

約数和(自身を含む): 30965760

約数和(自身を除く): 14044317

約数列:

[1, 3, 7, 11, 17, 21, 31, 33, 51, 77, 93, 119, 139, 187, 217, 231, 341, 357, 417, 527, 561, 651, 973, 1023, 1309, 1529, 1581, 2363, 2387, 2919, 3689, 3927, 4309, 4587, 5797, 7089, 7161, 10703, 11067, 12927, 16541, 17391, 25993, 30163, 32109, 40579, 47399, 49623, 73253, 77979, 90489, 121737, 142197, 181951, 219759, 331793, 512771, 545853, 805783, 995379, 1538313, 2417349, 5640481, 16921443]

約数ペア:

[(1, 16921443), (3, 5640481), (7, 2417349), (11, 1538313), (17, 995379), (21, 805783), (31, 545853), (33, 512771), (51, 331793), (77, 219759), (93, 181951), (119, 142197), (139, 121737), (187, 90489), (217, 77979), (231, 73253), (341, 49623), (357, 47399), (417, 40579), (527, 32109), (561, 30163), (651, 25993), (973, 17391), (1023, 16541), (1309, 12927), (1529, 11067), (1581, 10703), (2363, 7161), (2387, 7089), (2919, 5797), (3689, 4587), (3927, 4309)]