720792280

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1386139}}^1$

素因数の和:1386163

約数の個数: 32

約数和(自身を含む): 1746536400

約数和(自身を除く): 1025744120

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 1386139, 2772278, 5544556, 6930695, 11089112, 13861390, 18019807, 27722780, 36039614, 55445560, 72079228, 90099035, 144158456, 180198070, 360396140, 720792280]

約数ペア:

[(1, 720792280), (2, 360396140), (4, 180198070), (5, 144158456), (8, 90099035), (10, 72079228), (13, 55445560), (20, 36039614), (26, 27722780), (40, 18019807), (52, 13861390), (65, 11089112), (104, 6930695), (130, 5544556), (260, 2772278), (520, 1386139)]