209216840

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{747203}}^1$

素因数の和:747221

約数の個数: 32

約数和(自身を含む): 537986880

約数和(自身を除く): 328770040

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 747203, 1494406, 2988812, 3736015, 5230421, 5977624, 7472030, 10460842, 14944060, 20921684, 26152105, 29888120, 41843368, 52304210, 104608420, 209216840]

約数ペア:

[(1, 209216840), (2, 104608420), (4, 52304210), (5, 41843368), (7, 29888120), (8, 26152105), (10, 20921684), (14, 14944060), (20, 10460842), (28, 7472030), (35, 5977624), (40, 5230421), (56, 3736015), (70, 2988812), (140, 1494406), (280, 747203)]