21490419

素因数分解:

$3^1\times {\mathrm{131}}^1\times {\mathrm{149}}^1\times {\mathrm{367}}^1$

素因数の和:650

約数の個数: 16

約数和(自身を含む): 29145600

約数和(自身を除く): 7655181

約数列:

[1, 3, 131, 149, 367, 393, 447, 1101, 19519, 48077, 54683, 58557, 144231, 164049, 7163473, 21490419]

約数ペア:

[(1, 21490419), (3, 7163473), (131, 164049), (149, 144231), (367, 58557), (393, 54683), (447, 48077), (1101, 19519)]