31945720

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{109}}^1\times {\mathrm{431}}^1$

素因数の和:568

約数の個数: 64

約数和(自身を含む): 76982400

約数和(自身を除く): 45036680

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 109, 136, 170, 218, 340, 431, 436, 545, 680, 862, 872, 1090, 1724, 1853, 2155, 2180, 3448, 3706, 4310, 4360, 7327, 7412, 8620, 9265, 14654, 14824, 17240, 18530, 29308, 36635, 37060, 46979, 58616, 73270, 74120, 93958, 146540, 187916, 234895, 293080, 375832, 469790, 798643, 939580, 1597286, 1879160, 3194572, 3993215, 6389144, 7986430, 15972860, 31945720]

約数ペア:

[(1, 31945720), (2, 15972860), (4, 7986430), (5, 6389144), (8, 3993215), (10, 3194572), (17, 1879160), (20, 1597286), (34, 939580), (40, 798643), (68, 469790), (85, 375832), (109, 293080), (136, 234895), (170, 187916), (218, 146540), (340, 93958), (431, 74120), (436, 73270), (545, 58616), (680, 46979), (862, 37060), (872, 36635), (1090, 29308), (1724, 18530), (1853, 17240), (2155, 14824), (2180, 14654), (3448, 9265), (3706, 8620), (4310, 7412), (4360, 7327)]