19960420

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{16361}}^1$

素因数の和:16431

約数の個数: 24

約数和(自身を含む): 42606648

約数和(自身を除く): 22646228

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 16361, 32722, 65444, 81805, 163610, 327220, 998021, 1996042, 3992084, 4990105, 9980210, 19960420]

約数ペア:

[(1, 19960420), (2, 9980210), (4, 4990105), (5, 3992084), (10, 1996042), (20, 998021), (61, 327220), (122, 163610), (244, 81805), (305, 65444), (610, 32722), (1220, 16361)]