20115056

素因数分解:

$2^4\times {\mathrm{13}}^2\times {\mathrm{43}}^1\times {\mathrm{173}}^1$

素因数の和:250

約数の個数: 60

約数和(自身を含む): 43432488

約数和(自身を除く): 23317432

約数列:

[1, 2, 4, 8, 13, 16, 26, 43, 52, 86, 104, 169, 172, 173, 208, 338, 344, 346, 559, 676, 688, 692, 1118, 1352, 1384, 2236, 2249, 2704, 2768, 4472, 4498, 7267, 7439, 8944, 8996, 14534, 14878, 17992, 29068, 29237, 29756, 35984, 58136, 58474, 59512, 96707, 116272, 116948, 119024, 193414, 233896, 386828, 467792, 773656, 1257191, 1547312, 2514382, 5028764, 10057528, 20115056]

約数ペア:

[(1, 20115056), (2, 10057528), (4, 5028764), (8, 2514382), (13, 1547312), (16, 1257191), (26, 773656), (43, 467792), (52, 386828), (86, 233896), (104, 193414), (169, 119024), (172, 116948), (173, 116272), (208, 96707), (338, 59512), (344, 58474), (346, 58136), (559, 35984), (676, 29756), (688, 29237), (692, 29068), (1118, 17992), (1352, 14878), (1384, 14534), (2236, 8996), (2249, 8944), (2704, 7439), (2768, 7267), (4472, 4498)]