21000564

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{1951}}^1$

素因数の和:1997

約数の個数: 72

約数和(自身を含む): 59684352

約数和(自身を除く): 38683788

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 23, 26, 36, 39, 46, 52, 69, 78, 92, 117, 138, 156, 207, 234, 276, 299, 414, 468, 598, 828, 897, 1196, 1794, 1951, 2691, 3588, 3902, 5382, 5853, 7804, 10764, 11706, 17559, 23412, 25363, 35118, 44873, 50726, 70236, 76089, 89746, 101452, 134619, 152178, 179492, 228267, 269238, 304356, 403857, 456534, 538476, 583349, 807714, 913068, 1166698, 1615428, 1750047, 2333396, 3500094, 5250141, 7000188, 10500282, 21000564]

約数ペア:

[(1, 21000564), (2, 10500282), (3, 7000188), (4, 5250141), (6, 3500094), (9, 2333396), (12, 1750047), (13, 1615428), (18, 1166698), (23, 913068), (26, 807714), (36, 583349), (39, 538476), (46, 456534), (52, 403857), (69, 304356), (78, 269238), (92, 228267), (117, 179492), (138, 152178), (156, 134619), (207, 101452), (234, 89746), (276, 76089), (299, 70236), (414, 50726), (468, 44873), (598, 35118), (828, 25363), (897, 23412), (1196, 17559), (1794, 11706), (1951, 10764), (2691, 7804), (3588, 5853), (3902, 5382)]