21218667

素因数分解:

$3^1\times {\mathrm{47}}^1\times {\mathrm{61}}^1\times {\mathrm{2467}}^1$

素因数の和:2578

約数の個数: 16

約数和(自身を含む): 29379072

約数和(自身を除く): 8160405

約数列:

[1, 3, 47, 61, 141, 183, 2467, 2867, 7401, 8601, 115949, 150487, 347847, 451461, 7072889, 21218667]

約数ペア:

[(1, 21218667), (3, 7072889), (47, 451461), (61, 347847), (141, 150487), (183, 115949), (2467, 8601), (2867, 7401)]