21640944

素因数分解:

$2^4\times 3^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{439}}^1$

素因数の和:542

約数の個数: 80

約数和(自身を含む): 61107200

約数和(自身を除く): 39466256

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 24, 26, 39, 48, 52, 78, 79, 104, 156, 158, 208, 237, 312, 316, 439, 474, 624, 632, 878, 948, 1027, 1264, 1317, 1756, 1896, 2054, 2634, 3081, 3512, 3792, 4108, 5268, 5707, 6162, 7024, 8216, 10536, 11414, 12324, 16432, 17121, 21072, 22828, 24648, 34242, 34681, 45656, 49296, 68484, 69362, 91312, 104043, 136968, 138724, 208086, 273936, 277448, 416172, 450853, 554896, 832344, 901706, 1352559, 1664688, 1803412, 2705118, 3606824, 5410236, 7213648, 10820472, 21640944]

約数ペア:

[(1, 21640944), (2, 10820472), (3, 7213648), (4, 5410236), (6, 3606824), (8, 2705118), (12, 1803412), (13, 1664688), (16, 1352559), (24, 901706), (26, 832344), (39, 554896), (48, 450853), (52, 416172), (78, 277448), (79, 273936), (104, 208086), (156, 138724), (158, 136968), (208, 104043), (237, 91312), (312, 69362), (316, 68484), (439, 49296), (474, 45656), (624, 34681), (632, 34242), (878, 24648), (948, 22828), (1027, 21072), (1264, 17121), (1317, 16432), (1756, 12324), (1896, 11414), (2054, 10536), (2634, 8216), (3081, 7024), (3512, 6162), (3792, 5707), (4108, 5268)]