19828660

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{16253}}^1$

素因数の和:16323

約数の個数: 24

約数和(自身を含む): 42325416

約数和(自身を除く): 22496756

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 16253, 32506, 65012, 81265, 162530, 325060, 991433, 1982866, 3965732, 4957165, 9914330, 19828660]

約数ペア:

[(1, 19828660), (2, 9914330), (4, 4957165), (5, 3965732), (10, 1982866), (20, 991433), (61, 325060), (122, 162530), (244, 81265), (305, 65012), (610, 32506), (1220, 16253)]