21383804

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{7759}}^1$

素因数の和:7829

約数の個数: 24

約数和(自身を含む): 41065920

約数和(自身を除く): 19682116

約数列:

[1, 2, 4, 13, 26, 52, 53, 106, 212, 689, 1378, 2756, 7759, 15518, 31036, 100867, 201734, 403468, 411227, 822454, 1644908, 5345951, 10691902, 21383804]

約数ペア:

[(1, 21383804), (2, 10691902), (4, 5345951), (13, 1644908), (26, 822454), (52, 411227), (53, 403468), (106, 201734), (212, 100867), (689, 31036), (1378, 15518), (2756, 7759)]