40840280

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{78539}}^1$

素因数の和:78563

約数の個数: 32

約数和(自身を含む): 98960400

約数和(自身を除く): 58120120

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 78539, 157078, 314156, 392695, 628312, 785390, 1021007, 1570780, 2042014, 3141560, 4084028, 5105035, 8168056, 10210070, 20420140, 40840280]

約数ペア:

[(1, 40840280), (2, 20420140), (4, 10210070), (5, 8168056), (8, 5105035), (10, 4084028), (13, 3141560), (20, 2042014), (26, 1570780), (40, 1021007), (52, 785390), (65, 628312), (104, 392695), (130, 314156), (260, 157078), (520, 78539)]