155772020

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{431}}^1\times {\mathrm{1063}}^1$

素因数の和:1520

約数の個数: 48

約数和(自身を含む): 347493888

約数和(自身を除く): 191721868

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 431, 862, 1063, 1724, 2126, 2155, 4252, 4310, 5315, 7327, 8620, 10630, 14654, 18071, 21260, 29308, 36142, 36635, 72284, 73270, 90355, 146540, 180710, 361420, 458153, 916306, 1832612, 2290765, 4581530, 7788601, 9163060, 15577202, 31154404, 38943005, 77886010, 155772020]

約数ペア:

[(1, 155772020), (2, 77886010), (4, 38943005), (5, 31154404), (10, 15577202), (17, 9163060), (20, 7788601), (34, 4581530), (68, 2290765), (85, 1832612), (170, 916306), (340, 458153), (431, 361420), (862, 180710), (1063, 146540), (1724, 90355), (2126, 73270), (2155, 72284), (4252, 36635), (4310, 36142), (5315, 29308), (7327, 21260), (8620, 18071), (10630, 14654)]