20528624

素因数分解:

$2^4\times {\mathrm{79}}^1\times {\mathrm{109}}^1\times {\mathrm{149}}^1$

素因数の和:345

約数の個数: 40

約数和(自身を含む): 40920000

約数和(自身を除く): 20391376

約数列:

[1, 2, 4, 8, 16, 79, 109, 149, 158, 218, 298, 316, 436, 596, 632, 872, 1192, 1264, 1744, 2384, 8611, 11771, 16241, 17222, 23542, 32482, 34444, 47084, 64964, 68888, 94168, 129928, 137776, 188336, 259856, 1283039, 2566078, 5132156, 10264312, 20528624]

約数ペア:

[(1, 20528624), (2, 10264312), (4, 5132156), (8, 2566078), (16, 1283039), (79, 259856), (109, 188336), (149, 137776), (158, 129928), (218, 94168), (298, 68888), (316, 64964), (436, 47084), (596, 34444), (632, 32482), (872, 23542), (1192, 17222), (1264, 16241), (1744, 11771), (2384, 8611)]