644551490

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{82529}}^1$

素因数の和:82618

約数の個数: 32

約数和(自身を含む): 1283506560

約数和(自身を除く): 638955070

約数列:

[1, 2, 5, 10, 11, 22, 55, 71, 110, 142, 355, 710, 781, 1562, 3905, 7810, 82529, 165058, 412645, 825290, 907819, 1815638, 4539095, 5859559, 9078190, 11719118, 29297795, 58595590, 64455149, 128910298, 322275745, 644551490]

約数ペア:

[(1, 644551490), (2, 322275745), (5, 128910298), (10, 64455149), (11, 58595590), (22, 29297795), (55, 11719118), (71, 9078190), (110, 5859559), (142, 4539095), (355, 1815638), (710, 907819), (781, 825290), (1562, 412645), (3905, 165058), (7810, 82529)]