20502340

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{1283}}^1$

素因数の和:1356

約数の個数: 48

約数和(自身を含む): 46593792

約数和(自身を除く): 26091452

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 47, 68, 85, 94, 170, 188, 235, 340, 470, 799, 940, 1283, 1598, 2566, 3196, 3995, 5132, 6415, 7990, 12830, 15980, 21811, 25660, 43622, 60301, 87244, 109055, 120602, 218110, 241204, 301505, 436220, 603010, 1025117, 1206020, 2050234, 4100468, 5125585, 10251170, 20502340]

約数ペア:

[(1, 20502340), (2, 10251170), (4, 5125585), (5, 4100468), (10, 2050234), (17, 1206020), (20, 1025117), (34, 603010), (47, 436220), (68, 301505), (85, 241204), (94, 218110), (170, 120602), (188, 109055), (235, 87244), (340, 60301), (470, 43622), (799, 25660), (940, 21811), (1283, 15980), (1598, 12830), (2566, 7990), (3196, 6415), (3995, 5132)]