21391356

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{254659}}^1$

素因数の和:254673

約数の個数: 24

約数和(自身を含む): 57043840

約数和(自身を除く): 35652484

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 254659, 509318, 763977, 1018636, 1527954, 1782613, 3055908, 3565226, 5347839, 7130452, 10695678, 21391356]

約数ペア:

[(1, 21391356), (2, 10695678), (3, 7130452), (4, 5347839), (6, 3565226), (7, 3055908), (12, 1782613), (14, 1527954), (21, 1018636), (28, 763977), (42, 509318), (84, 254659)]