19890688

素因数分解:

$2^9\times {\mathrm{53}}^1\times {\mathrm{733}}^1$

素因数の和:804

約数の個数: 40

約数和(自身を含む): 40547628

約数和(自身を除く): 20656940

約数列:

[1, 2, 4, 8, 16, 32, 53, 64, 106, 128, 212, 256, 424, 512, 733, 848, 1466, 1696, 2932, 3392, 5864, 6784, 11728, 13568, 23456, 27136, 38849, 46912, 77698, 93824, 155396, 187648, 310792, 375296, 621584, 1243168, 2486336, 4972672, 9945344, 19890688]

約数ペア:

[(1, 19890688), (2, 9945344), (4, 4972672), (8, 2486336), (16, 1243168), (32, 621584), (53, 375296), (64, 310792), (106, 187648), (128, 155396), (212, 93824), (256, 77698), (424, 46912), (512, 38849), (733, 27136), (848, 23456), (1466, 13568), (1696, 11728), (2932, 6784), (3392, 5864)]