21424263

素因数分解:

$3^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{149}}^1\times {\mathrm{167}}^1$

素因数の和:367

約数の個数: 32

約数和(自身を含む): 33868800

約数和(自身を除く): 12444537

約数列:

[1, 3, 7, 21, 41, 123, 149, 167, 287, 447, 501, 861, 1043, 1169, 3129, 3507, 6109, 6847, 18327, 20541, 24883, 42763, 47929, 74649, 128289, 143787, 174181, 522543, 1020203, 3060609, 7141421, 21424263]

約数ペア:

[(1, 21424263), (3, 7141421), (7, 3060609), (21, 1020203), (41, 522543), (123, 174181), (149, 143787), (167, 128289), (287, 74649), (447, 47929), (501, 42763), (861, 24883), (1043, 20541), (1169, 18327), (3129, 6847), (3507, 6109)]