21239290

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{101}}^1\times {\mathrm{1237}}^1$

素因数の和:1362

約数の個数: 32

約数和(自身を含む): 40913424

約数和(自身を除く): 19674134

約数列:

[1, 2, 5, 10, 17, 34, 85, 101, 170, 202, 505, 1010, 1237, 1717, 2474, 3434, 6185, 8585, 12370, 17170, 21029, 42058, 105145, 124937, 210290, 249874, 624685, 1249370, 2123929, 4247858, 10619645, 21239290]

約数ペア:

[(1, 21239290), (2, 10619645), (5, 4247858), (10, 2123929), (17, 1249370), (34, 624685), (85, 249874), (101, 210290), (170, 124937), (202, 105145), (505, 42058), (1010, 21029), (1237, 17170), (1717, 12370), (2474, 8585), (3434, 6185)]