18738735

素因数分解:

$3^1\times 5^1\times {\mathrm{73}}^1\times {\mathrm{109}}^1\times {\mathrm{157}}^1$

素因数の和:347

約数の個数: 32

約数和(自身を含む): 30866880

約数和(自身を除く): 12128145

約数列:

[1, 3, 5, 15, 73, 109, 157, 219, 327, 365, 471, 545, 785, 1095, 1635, 2355, 7957, 11461, 17113, 23871, 34383, 39785, 51339, 57305, 85565, 119355, 171915, 256695, 1249249, 3747747, 6246245, 18738735]

約数ペア:

[(1, 18738735), (3, 6246245), (5, 3747747), (15, 1249249), (73, 256695), (109, 171915), (157, 119355), (219, 85565), (327, 57305), (365, 51339), (471, 39785), (545, 34383), (785, 23871), (1095, 17113), (1635, 11461), (2355, 7957)]