21504218

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{107}}^1\times {\mathrm{257}}^1$

素因数の和:406

約数の個数: 32

約数和(自身を含む): 36111744

約数和(自身を除く): 14607526

約数列:

[1, 2, 17, 23, 34, 46, 107, 214, 257, 391, 514, 782, 1819, 2461, 3638, 4369, 4922, 5911, 8738, 11822, 27499, 41837, 54998, 83674, 100487, 200974, 467483, 632477, 934966, 1264954, 10752109, 21504218]

約数ペア:

[(1, 21504218), (2, 10752109), (17, 1264954), (23, 934966), (34, 632477), (46, 467483), (107, 200974), (214, 100487), (257, 83674), (391, 54998), (514, 41837), (782, 27499), (1819, 11822), (2461, 8738), (3638, 5911), (4369, 4922)]