21984856

素因数分解:

$2^3\times {\mathrm{41}}^1\times {\mathrm{97}}^1\times {\mathrm{691}}^1$

素因数の和:835

約数の個数: 32

約数和(自身を含む): 42724080

約数和(自身を除く): 20739224

約数列:

[1, 2, 4, 8, 41, 82, 97, 164, 194, 328, 388, 691, 776, 1382, 2764, 3977, 5528, 7954, 15908, 28331, 31816, 56662, 67027, 113324, 134054, 226648, 268108, 536216, 2748107, 5496214, 10992428, 21984856]

約数ペア:

[(1, 21984856), (2, 10992428), (4, 5496214), (8, 2748107), (41, 536216), (82, 268108), (97, 226648), (164, 134054), (194, 113324), (328, 67027), (388, 56662), (691, 31816), (776, 28331), (1382, 15908), (2764, 7954), (3977, 5528)]