212378140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{816839}}^1$

素因数の和:816861

約数の個数: 24

約数和(自身を含む): 480301920

約数和(自身を除く): 267923780

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 816839, 1633678, 3267356, 4084195, 8168390, 10618907, 16336780, 21237814, 42475628, 53094535, 106189070, 212378140]

約数ペア:

[(1, 212378140), (2, 106189070), (4, 53094535), (5, 42475628), (10, 21237814), (13, 16336780), (20, 10618907), (26, 8168390), (52, 4084195), (65, 3267356), (130, 1633678), (260, 816839)]