12728560

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{12239}}^1$

素因数の和:12265

約数の個数: 40

約数和(自身を含む): 31872960

約数和(自身を除く): 19144400

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 12239, 24478, 48956, 61195, 97912, 122390, 159107, 195824, 244780, 318214, 489560, 636428, 795535, 979120, 1272856, 1591070, 2545712, 3182140, 6364280, 12728560]

約数ペア:

[(1, 12728560), (2, 6364280), (4, 3182140), (5, 2545712), (8, 1591070), (10, 1272856), (13, 979120), (16, 795535), (20, 636428), (26, 489560), (40, 318214), (52, 244780), (65, 195824), (80, 159107), (104, 122390), (130, 97912), (208, 61195), (260, 48956), (520, 24478), (1040, 12239)]