19977021

素因数分解:

$3^2\times {\mathrm{47}}^1\times {\mathrm{83}}^1\times {\mathrm{569}}^1$

素因数の和:705

約数の個数: 24

約数和(自身を含む): 29877120

約数和(自身を除く): 9900099

約数列:

[1, 3, 9, 47, 83, 141, 249, 423, 569, 747, 1707, 3901, 5121, 11703, 26743, 35109, 47227, 80229, 141681, 240687, 425043, 2219669, 6659007, 19977021]

約数ペア:

[(1, 19977021), (3, 6659007), (9, 2219669), (47, 425043), (83, 240687), (141, 141681), (249, 80229), (423, 47227), (569, 35109), (747, 26743), (1707, 11703), (3901, 5121)]