217639370

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{397}}^1\times {\mathrm{4217}}^1$

素因数の和:4634

約数の個数: 32

約数和(自身を含む): 423048528

約数和(自身を除く): 205409158

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 397, 794, 1985, 3970, 4217, 5161, 8434, 10322, 21085, 25805, 42170, 51610, 54821, 109642, 274105, 548210, 1674149, 3348298, 8370745, 16741490, 21763937, 43527874, 108819685, 217639370]

約数ペア:

[(1, 217639370), (2, 108819685), (5, 43527874), (10, 21763937), (13, 16741490), (26, 8370745), (65, 3348298), (130, 1674149), (397, 548210), (794, 274105), (1985, 109642), (3970, 54821), (4217, 51610), (5161, 42170), (8434, 25805), (10322, 21085)]