21680763

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{617}}^1$

素因数の和:703

約数の個数: 32

約数和(自身を含む): 33638976

約数和(自身を除く): 11958213

約数列:

[1, 3, 13, 17, 39, 51, 53, 159, 221, 617, 663, 689, 901, 1851, 2067, 2703, 8021, 10489, 11713, 24063, 31467, 32701, 35139, 98103, 136357, 409071, 425113, 555917, 1275339, 1667751, 7226921, 21680763]

約数ペア:

[(1, 21680763), (3, 7226921), (13, 1667751), (17, 1275339), (39, 555917), (51, 425113), (53, 409071), (159, 136357), (221, 98103), (617, 35139), (663, 32701), (689, 31467), (901, 24063), (1851, 11713), (2067, 10489), (2703, 8021)]