17996965

素因数分解:

$5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{149}}^1$

素因数の和:214

約数の個数: 48

約数和(自身を含む): 27702000

約数和(自身を除く): 9705035

約数列:

[1, 5, 7, 17, 29, 35, 49, 85, 119, 145, 149, 203, 245, 493, 595, 745, 833, 1015, 1043, 1421, 2465, 2533, 3451, 4165, 4321, 5215, 7105, 7301, 12665, 17255, 17731, 21605, 24157, 30247, 36505, 73457, 88655, 120785, 124117, 151235, 211729, 367285, 514199, 620585, 1058645, 2570995, 3599393, 17996965]

約数ペア:

[(1, 17996965), (5, 3599393), (7, 2570995), (17, 1058645), (29, 620585), (35, 514199), (49, 367285), (85, 211729), (119, 151235), (145, 124117), (149, 120785), (203, 88655), (245, 73457), (493, 36505), (595, 30247), (745, 24157), (833, 21605), (1015, 17731), (1043, 17255), (1421, 12665), (2465, 7301), (2533, 7105), (3451, 5215), (4165, 4321)]