19865156

素因数分解:

$2^2\times {\mathrm{41}}^1\times {\mathrm{89}}^1\times {\mathrm{1361}}^1$

素因数の和:1495

約数の個数: 24

約数和(自身を含む): 36038520

約数和(自身を除く): 16173364

約数列:

[1, 2, 4, 41, 82, 89, 164, 178, 356, 1361, 2722, 3649, 5444, 7298, 14596, 55801, 111602, 121129, 223204, 242258, 484516, 4966289, 9932578, 19865156]

約数ペア:

[(1, 19865156), (2, 9932578), (4, 4966289), (41, 484516), (82, 242258), (89, 223204), (164, 121129), (178, 111602), (356, 55801), (1361, 14596), (2722, 7298), (3649, 5444)]