25142120

素因数分解:

$2^3\times 5^1\times {\mathrm{421}}^1\times {\mathrm{1493}}^1$

素因数の和:1925

約数の個数: 32

約数和(自身を含む): 56742120

約数和(自身を除く): 31600000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 421, 842, 1493, 1684, 2105, 2986, 3368, 4210, 5972, 7465, 8420, 11944, 14930, 16840, 29860, 59720, 628553, 1257106, 2514212, 3142765, 5028424, 6285530, 12571060, 25142120]

約数ペア:

[(1, 25142120), (2, 12571060), (4, 6285530), (5, 5028424), (8, 3142765), (10, 2514212), (20, 1257106), (40, 628553), (421, 59720), (842, 29860), (1493, 16840), (1684, 14930), (2105, 11944), (2986, 8420), (3368, 7465), (4210, 5972)]