291221008

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{26417}}^1$

素因数の和:26491

約数の個数: 40

約数和(自身を含む): 619132248

約数和(自身を除く): 327911240

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 53, 104, 106, 208, 212, 424, 689, 848, 1378, 2756, 5512, 11024, 26417, 52834, 105668, 211336, 343421, 422672, 686842, 1373684, 1400101, 2747368, 2800202, 5494736, 5600404, 11200808, 18201313, 22401616, 36402626, 72805252, 145610504, 291221008]

約数ペア:

[(1, 291221008), (2, 145610504), (4, 72805252), (8, 36402626), (13, 22401616), (16, 18201313), (26, 11200808), (52, 5600404), (53, 5494736), (104, 2800202), (106, 2747368), (208, 1400101), (212, 1373684), (424, 686842), (689, 422672), (848, 343421), (1378, 211336), (2756, 105668), (5512, 52834), (11024, 26417)]