19381840

素因数分解:

$2^4\times 5^1\times {\mathrm{242273}}^1$

素因数の和:242286

約数の個数: 20

約数和(自身を含む): 45062964

約数和(自身を除く): 25681124

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 242273, 484546, 969092, 1211365, 1938184, 2422730, 3876368, 4845460, 9690920, 19381840]

約数ペア:

[(1, 19381840), (2, 9690920), (4, 4845460), (5, 3876368), (8, 2422730), (10, 1938184), (16, 1211365), (20, 969092), (40, 484546), (80, 242273)]