266988280

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{513439}}^1$

素因数の和:513463

約数の個数: 32

約数和(自身を含む): 646934400

約数和(自身を除く): 379946120

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 513439, 1026878, 2053756, 2567195, 4107512, 5134390, 6674707, 10268780, 13349414, 20537560, 26698828, 33373535, 53397656, 66747070, 133494140, 266988280]

約数ペア:

[(1, 266988280), (2, 133494140), (4, 66747070), (5, 53397656), (8, 33373535), (10, 26698828), (13, 20537560), (20, 13349414), (26, 10268780), (40, 6674707), (52, 5134390), (65, 4107512), (104, 2567195), (130, 2053756), (260, 1026878), (520, 513439)]