21256664

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1093}}^1$

素因数の和:1140

約数の個数: 64

約数和(自身を含む): 49623840

約数和(自身を除く): 28367176

約数列:

[1, 2, 4, 8, 11, 13, 17, 22, 26, 34, 44, 52, 68, 88, 104, 136, 143, 187, 221, 286, 374, 442, 572, 748, 884, 1093, 1144, 1496, 1768, 2186, 2431, 4372, 4862, 8744, 9724, 12023, 14209, 18581, 19448, 24046, 28418, 37162, 48092, 56836, 74324, 96184, 113672, 148648, 156299, 204391, 241553, 312598, 408782, 483106, 625196, 817564, 966212, 1250392, 1635128, 1932424, 2657083, 5314166, 10628332, 21256664]

約数ペア:

[(1, 21256664), (2, 10628332), (4, 5314166), (8, 2657083), (11, 1932424), (13, 1635128), (17, 1250392), (22, 966212), (26, 817564), (34, 625196), (44, 483106), (52, 408782), (68, 312598), (88, 241553), (104, 204391), (136, 156299), (143, 148648), (187, 113672), (221, 96184), (286, 74324), (374, 56836), (442, 48092), (572, 37162), (748, 28418), (884, 24046), (1093, 19448), (1144, 18581), (1496, 14209), (1768, 12023), (2186, 9724), (2431, 8744), (4372, 4862)]