21560552818

素因数分解:

$2^1\times 7^2\times {\mathrm{71}}^1\times {\mathrm{151}}^1\times {\mathrm{20521}}^1$

素因数の和:20759

約数の個数: 48

約数和(自身を含む): 38405363328

約数和(自身を除く): 16844810510

約数列:

[1, 2, 7, 14, 49, 71, 98, 142, 151, 302, 497, 994, 1057, 2114, 3479, 6958, 7399, 10721, 14798, 20521, 21442, 41042, 75047, 143647, 150094, 287294, 525329, 1005529, 1050658, 1456991, 2011058, 2913982, 3098671, 6197342, 10198937, 20397874, 21690697, 43381394, 71392559, 142785118, 151834879, 220005641, 303669758, 440011282, 1540039487, 3080078974, 10780276409, 21560552818]

約数ペア:

[(1, 21560552818), (2, 10780276409), (7, 3080078974), (14, 1540039487), (49, 440011282), (71, 303669758), (98, 220005641), (142, 151834879), (151, 142785118), (302, 71392559), (497, 43381394), (994, 21690697), (1057, 20397874), (2114, 10198937), (3479, 6197342), (6958, 3098671), (7399, 2913982), (10721, 2011058), (14798, 1456991), (20521, 1050658), (21442, 1005529), (41042, 525329), (75047, 287294), (143647, 150094)]