21743421

素因数分解:

$3^1\times 7^1\times {\mathrm{149}}^1\times {\mathrm{6949}}^1$

素因数の和:7108

約数の個数: 16

約数和(自身を含む): 33360000

約数和(自身を除く): 11616579

約数列:

[1, 3, 7, 21, 149, 447, 1043, 3129, 6949, 20847, 48643, 145929, 1035401, 3106203, 7247807, 21743421]

約数ペア:

[(1, 21743421), (3, 7247807), (7, 3106203), (21, 1035401), (149, 145929), (447, 48643), (1043, 20847), (3129, 6949)]