21299810

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{2557}}^1$

素因数の和:2595

約数の個数: 48

約数和(自身を含む): 47241144

約数和(自身を除く): 25941334

約数列:

[1, 2, 5, 7, 10, 14, 17, 34, 35, 49, 70, 85, 98, 119, 170, 238, 245, 490, 595, 833, 1190, 1666, 2557, 4165, 5114, 8330, 12785, 17899, 25570, 35798, 43469, 86938, 89495, 125293, 178990, 217345, 250586, 304283, 434690, 608566, 626465, 1252930, 1521415, 2129981, 3042830, 4259962, 10649905, 21299810]

約数ペア:

[(1, 21299810), (2, 10649905), (5, 4259962), (7, 3042830), (10, 2129981), (14, 1521415), (17, 1252930), (34, 626465), (35, 608566), (49, 434690), (70, 304283), (85, 250586), (98, 217345), (119, 178990), (170, 125293), (238, 89495), (245, 86938), (490, 43469), (595, 35798), (833, 25570), (1190, 17899), (1666, 12785), (2557, 8330), (4165, 5114)]