21803210

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{193}}^1$

素因数の和:303

約数の個数: 64

約数和(自身を含む): 46932480

約数和(自身を除く): 25129270

約数列:

[1, 2, 5, 10, 11, 13, 22, 26, 55, 65, 79, 110, 130, 143, 158, 193, 286, 386, 395, 715, 790, 869, 965, 1027, 1430, 1738, 1930, 2054, 2123, 2509, 4246, 4345, 5018, 5135, 8690, 10270, 10615, 11297, 12545, 15247, 21230, 22594, 25090, 27599, 30494, 55198, 56485, 76235, 112970, 137995, 152470, 167717, 198211, 275990, 335434, 396422, 838585, 991055, 1677170, 1982110, 2180321, 4360642, 10901605, 21803210]

約数ペア:

[(1, 21803210), (2, 10901605), (5, 4360642), (10, 2180321), (11, 1982110), (13, 1677170), (22, 991055), (26, 838585), (55, 396422), (65, 335434), (79, 275990), (110, 198211), (130, 167717), (143, 152470), (158, 137995), (193, 112970), (286, 76235), (386, 56485), (395, 55198), (715, 30494), (790, 27599), (869, 25090), (965, 22594), (1027, 21230), (1430, 15247), (1738, 12545), (1930, 11297), (2054, 10615), (2123, 10270), (2509, 8690), (4246, 5135), (4345, 5018)]