645204368

素因数分解:

$2^4\times {\mathrm{73}}^1\times {\mathrm{552401}}^1$

素因数の和:552482

約数の個数: 20

約数和(自身を含む): 1267210188

約数和(自身を除く): 622005820

約数列:

[1, 2, 4, 8, 16, 73, 146, 292, 584, 1168, 552401, 1104802, 2209604, 4419208, 8838416, 40325273, 80650546, 161301092, 322602184, 645204368]

約数ペア:

[(1, 645204368), (2, 322602184), (4, 161301092), (8, 80650546), (16, 40325273), (73, 8838416), (146, 4419208), (292, 2209604), (584, 1104802), (1168, 552401)]