31129720

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{45779}}^1$

素因数の和:45807

約数の個数: 32

約数和(自身を含む): 74163600

約数和(自身を除く): 43033880

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 45779, 91558, 183116, 228895, 366232, 457790, 778243, 915580, 1556486, 1831160, 3112972, 3891215, 6225944, 7782430, 15564860, 31129720]

約数ペア:

[(1, 31129720), (2, 15564860), (4, 7782430), (5, 6225944), (8, 3891215), (10, 3112972), (17, 1831160), (20, 1556486), (34, 915580), (40, 778243), (68, 457790), (85, 366232), (136, 228895), (170, 183116), (340, 91558), (680, 45779)]