209230480

素因数分解:

$2^4\times 5^1\times {\mathrm{1289}}^1\times {\mathrm{2029}}^1$

素因数の和:3331

約数の個数: 40

約数和(自身を含む): 487078200

約数和(自身を除く): 277847720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1289, 2029, 2578, 4058, 5156, 6445, 8116, 10145, 10312, 12890, 16232, 20290, 20624, 25780, 32464, 40580, 51560, 81160, 103120, 162320, 2615381, 5230762, 10461524, 13076905, 20923048, 26153810, 41846096, 52307620, 104615240, 209230480]

約数ペア:

[(1, 209230480), (2, 104615240), (4, 52307620), (5, 41846096), (8, 26153810), (10, 20923048), (16, 13076905), (20, 10461524), (40, 5230762), (80, 2615381), (1289, 162320), (2029, 103120), (2578, 81160), (4058, 51560), (5156, 40580), (6445, 32464), (8116, 25780), (10145, 20624), (10312, 20290), (12890, 16232)]