21866793

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{71}}^1\times {\mathrm{149}}^1$

素因数の和:289

約数の個数: 32

約数和(自身を含む): 32659200

約数和(自身を除く): 10792407

約数列:

[1, 3, 13, 39, 53, 71, 149, 159, 213, 447, 689, 923, 1937, 2067, 2769, 3763, 5811, 7897, 10579, 11289, 23691, 31737, 48919, 102661, 137527, 146757, 307983, 412581, 560687, 1682061, 7288931, 21866793]

約数ペア:

[(1, 21866793), (3, 7288931), (13, 1682061), (39, 560687), (53, 412581), (71, 307983), (149, 146757), (159, 137527), (213, 102661), (447, 48919), (689, 31737), (923, 23691), (1937, 11289), (2067, 10579), (2769, 7897), (3763, 5811)]