17958125140

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{12646567}}^1$

素因数の和:12646647

約数の個数: 24

約数和(自身を含む): 38243221632

約数和(自身を除く): 20285096492

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 12646567, 25293134, 50586268, 63232835, 126465670, 252931340, 897906257, 1795812514, 3591625028, 4489531285, 8979062570, 17958125140]

約数ペア:

[(1, 17958125140), (2, 8979062570), (4, 4489531285), (5, 3591625028), (10, 1795812514), (20, 897906257), (71, 252931340), (142, 126465670), (284, 63232835), (355, 50586268), (710, 25293134), (1420, 12646567)]