21009624

素因数分解:

$2^3\times 3^1\times {\mathrm{53}}^1\times {\mathrm{83}}^1\times {\mathrm{199}}^1$

素因数の和:344

約数の個数: 64

約数和(自身を含む): 54432000

約数和(自身を除く): 33422376

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 53, 83, 106, 159, 166, 199, 212, 249, 318, 332, 398, 424, 498, 597, 636, 664, 796, 996, 1194, 1272, 1592, 1992, 2388, 4399, 4776, 8798, 10547, 13197, 16517, 17596, 21094, 26394, 31641, 33034, 35192, 42188, 49551, 52788, 63282, 66068, 84376, 99102, 105576, 126564, 132136, 198204, 253128, 396408, 875401, 1750802, 2626203, 3501604, 5252406, 7003208, 10504812, 21009624]

約数ペア:

[(1, 21009624), (2, 10504812), (3, 7003208), (4, 5252406), (6, 3501604), (8, 2626203), (12, 1750802), (24, 875401), (53, 396408), (83, 253128), (106, 198204), (159, 132136), (166, 126564), (199, 105576), (212, 99102), (249, 84376), (318, 66068), (332, 63282), (398, 52788), (424, 49551), (498, 42188), (597, 35192), (636, 33034), (664, 31641), (796, 26394), (996, 21094), (1194, 17596), (1272, 16517), (1592, 13197), (1992, 10547), (2388, 8798), (4399, 4776)]