21023196

素因数分解:

$2^2\times 3^1\times {\mathrm{19}}^2\times {\mathrm{23}}^1\times {\mathrm{211}}^1$

素因数の和:279

約数の個数: 72

約数和(自身を含む): 54278784

約数和(自身を除く): 33255588

約数列:

[1, 2, 3, 4, 6, 12, 19, 23, 38, 46, 57, 69, 76, 92, 114, 138, 211, 228, 276, 361, 422, 437, 633, 722, 844, 874, 1083, 1266, 1311, 1444, 1748, 2166, 2532, 2622, 4009, 4332, 4853, 5244, 8018, 8303, 9706, 12027, 14559, 16036, 16606, 19412, 24054, 24909, 29118, 33212, 48108, 49818, 58236, 76171, 92207, 99636, 152342, 184414, 228513, 276621, 304684, 368828, 457026, 553242, 914052, 1106484, 1751933, 3503866, 5255799, 7007732, 10511598, 21023196]

約数ペア:

[(1, 21023196), (2, 10511598), (3, 7007732), (4, 5255799), (6, 3503866), (12, 1751933), (19, 1106484), (23, 914052), (38, 553242), (46, 457026), (57, 368828), (69, 304684), (76, 276621), (92, 228513), (114, 184414), (138, 152342), (211, 99636), (228, 92207), (276, 76171), (361, 58236), (422, 49818), (437, 48108), (633, 33212), (722, 29118), (844, 24909), (874, 24054), (1083, 19412), (1266, 16606), (1311, 16036), (1444, 14559), (1748, 12027), (2166, 9706), (2532, 8303), (2622, 8018), (4009, 5244), (4332, 4853)]