20386970

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{137}}^1\times {\mathrm{647}}^1$

素因数の和:814

約数の個数: 32

約数和(自身を含む): 38631168

約数和(自身を除く): 18244198

約数列:

[1, 2, 5, 10, 23, 46, 115, 137, 230, 274, 647, 685, 1294, 1370, 3151, 3235, 6302, 6470, 14881, 15755, 29762, 31510, 74405, 88639, 148810, 177278, 443195, 886390, 2038697, 4077394, 10193485, 20386970]

約数ペア:

[(1, 20386970), (2, 10193485), (5, 4077394), (10, 2038697), (23, 886390), (46, 443195), (115, 177278), (137, 148810), (230, 88639), (274, 74405), (647, 31510), (685, 29762), (1294, 15755), (1370, 14881), (3151, 6470), (3235, 6302)]