19140784

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{4001}}^1$

素因数の和:4045

約数の個数: 40

約数和(自身を含む): 41684832

約数和(自身を除く): 22544048

約数列:

[1, 2, 4, 8, 13, 16, 23, 26, 46, 52, 92, 104, 184, 208, 299, 368, 598, 1196, 2392, 4001, 4784, 8002, 16004, 32008, 52013, 64016, 92023, 104026, 184046, 208052, 368092, 416104, 736184, 832208, 1196299, 1472368, 2392598, 4785196, 9570392, 19140784]

約数ペア:

[(1, 19140784), (2, 9570392), (4, 4785196), (8, 2392598), (13, 1472368), (16, 1196299), (23, 832208), (26, 736184), (46, 416104), (52, 368092), (92, 208052), (104, 184046), (184, 104026), (208, 92023), (299, 64016), (368, 52013), (598, 32008), (1196, 16004), (2392, 8002), (4001, 4784)]