20735240

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{30493}}^1$

素因数の和:30521

約数の個数: 32

約数和(自身を含む): 49400280

約数和(自身を除く): 28665040

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 30493, 60986, 121972, 152465, 243944, 304930, 518381, 609860, 1036762, 1219720, 2073524, 2591905, 4147048, 5183810, 10367620, 20735240]

約数ペア:

[(1, 20735240), (2, 10367620), (4, 5183810), (5, 4147048), (8, 2591905), (10, 2073524), (17, 1219720), (20, 1036762), (34, 609860), (40, 518381), (68, 304930), (85, 243944), (136, 152465), (170, 121972), (340, 60986), (680, 30493)]