18990213

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{103}}^1\times {\mathrm{151}}^1$

素因数の和:305

約数の個数: 32

約数和(自身を含む): 28833792

約数和(自身を除く): 9843579

約数列:

[1, 3, 11, 33, 37, 103, 111, 151, 309, 407, 453, 1133, 1221, 1661, 3399, 3811, 4983, 5587, 11433, 15553, 16761, 41921, 46659, 61457, 125763, 171083, 184371, 513249, 575461, 1726383, 6330071, 18990213]

約数ペア:

[(1, 18990213), (3, 6330071), (11, 1726383), (33, 575461), (37, 513249), (103, 184371), (111, 171083), (151, 125763), (309, 61457), (407, 46659), (453, 41921), (1133, 16761), (1221, 15553), (1661, 11433), (3399, 5587), (3811, 4983)]