31316720

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23027}}^1$

素因数の和:23057

約数の個数: 40

約数和(自身を含む): 77097744

約数和(自身を除く): 45781024

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 23027, 46054, 92108, 115135, 184216, 230270, 368432, 391459, 460540, 782918, 921080, 1565836, 1842160, 1957295, 3131672, 3914590, 6263344, 7829180, 15658360, 31316720]

約数ペア:

[(1, 31316720), (2, 15658360), (4, 7829180), (5, 6263344), (8, 3914590), (10, 3131672), (16, 1957295), (17, 1842160), (20, 1565836), (34, 921080), (40, 782918), (68, 460540), (80, 391459), (85, 368432), (136, 230270), (170, 184216), (272, 115135), (340, 92108), (680, 46054), (1360, 23027)]