21554560

素因数分解:

$2^7\times 5^1\times {\mathrm{33679}}^1$

素因数の和:33698

約数の個数: 32

約数和(自身を含む): 51530400

約数和(自身を除く): 29975840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 33679, 67358, 134716, 168395, 269432, 336790, 538864, 673580, 1077728, 1347160, 2155456, 2694320, 4310912, 5388640, 10777280, 21554560]

約数ペア:

[(1, 21554560), (2, 10777280), (4, 5388640), (5, 4310912), (8, 2694320), (10, 2155456), (16, 1347160), (20, 1077728), (32, 673580), (40, 538864), (64, 336790), (80, 269432), (128, 168395), (160, 134716), (320, 67358), (640, 33679)]