19939568

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{277}}^1\times {\mathrm{409}}^1$

素因数の和:705

約数の個数: 40

約数和(自身を含む): 42400560

約数和(自身を除く): 22460992

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 176, 277, 409, 554, 818, 1108, 1636, 2216, 3047, 3272, 4432, 4499, 6094, 6544, 8998, 12188, 17996, 24376, 35992, 48752, 71984, 113293, 226586, 453172, 906344, 1246223, 1812688, 2492446, 4984892, 9969784, 19939568]

約数ペア:

[(1, 19939568), (2, 9969784), (4, 4984892), (8, 2492446), (11, 1812688), (16, 1246223), (22, 906344), (44, 453172), (88, 226586), (176, 113293), (277, 71984), (409, 48752), (554, 35992), (818, 24376), (1108, 17996), (1636, 12188), (2216, 8998), (3047, 6544), (3272, 6094), (4432, 4499)]