20767216

素因数分解:

$2^4\times {\mathrm{71}}^1\times {\mathrm{101}}^1\times {\mathrm{181}}^1$

素因数の和:361

約数の個数: 40

約数和(自身を含む): 41434848

約数和(自身を除く): 20667632

約数列:

[1, 2, 4, 8, 16, 71, 101, 142, 181, 202, 284, 362, 404, 568, 724, 808, 1136, 1448, 1616, 2896, 7171, 12851, 14342, 18281, 25702, 28684, 36562, 51404, 57368, 73124, 102808, 114736, 146248, 205616, 292496, 1297951, 2595902, 5191804, 10383608, 20767216]

約数ペア:

[(1, 20767216), (2, 10383608), (4, 5191804), (8, 2595902), (16, 1297951), (71, 292496), (101, 205616), (142, 146248), (181, 114736), (202, 102808), (284, 73124), (362, 57368), (404, 51404), (568, 36562), (724, 28684), (808, 25702), (1136, 18281), (1448, 14342), (1616, 12851), (2896, 7171)]