18345808

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{193}}^1\times {\mathrm{457}}^1$

素因数の和:671

約数の個数: 40

約数和(自身を含む): 38561768

約数和(自身を除く): 20215960

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 193, 208, 386, 457, 772, 914, 1544, 1828, 2509, 3088, 3656, 5018, 5941, 7312, 10036, 11882, 20072, 23764, 40144, 47528, 88201, 95056, 176402, 352804, 705608, 1146613, 1411216, 2293226, 4586452, 9172904, 18345808]

約数ペア:

[(1, 18345808), (2, 9172904), (4, 4586452), (8, 2293226), (13, 1411216), (16, 1146613), (26, 705608), (52, 352804), (104, 176402), (193, 95056), (208, 88201), (386, 47528), (457, 40144), (772, 23764), (914, 20072), (1544, 11882), (1828, 10036), (2509, 7312), (3088, 5941), (3656, 5018)]