13211720

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19429}}^1$

素因数の和:19457

約数の個数: 32

約数和(自身を含む): 31476600

約数和(自身を除く): 18264880

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 19429, 38858, 77716, 97145, 155432, 194290, 330293, 388580, 660586, 777160, 1321172, 1651465, 2642344, 3302930, 6605860, 13211720]

約数ペア:

[(1, 13211720), (2, 6605860), (4, 3302930), (5, 2642344), (8, 1651465), (10, 1321172), (17, 777160), (20, 660586), (34, 388580), (40, 330293), (68, 194290), (85, 155432), (136, 97145), (170, 77716), (340, 38858), (680, 19429)]