20405784

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{5281}}^1$

素因数の和:5320

約数の個数: 64

約数和(自身を含む): 60848640

約数和(自身を除く): 40442856

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 23, 24, 28, 42, 46, 56, 69, 84, 92, 138, 161, 168, 184, 276, 322, 483, 552, 644, 966, 1288, 1932, 3864, 5281, 10562, 15843, 21124, 31686, 36967, 42248, 63372, 73934, 110901, 121463, 126744, 147868, 221802, 242926, 295736, 364389, 443604, 485852, 728778, 850241, 887208, 971704, 1457556, 1700482, 2550723, 2915112, 3400964, 5101446, 6801928, 10202892, 20405784]

約数ペア:

[(1, 20405784), (2, 10202892), (3, 6801928), (4, 5101446), (6, 3400964), (7, 2915112), (8, 2550723), (12, 1700482), (14, 1457556), (21, 971704), (23, 887208), (24, 850241), (28, 728778), (42, 485852), (46, 443604), (56, 364389), (69, 295736), (84, 242926), (92, 221802), (138, 147868), (161, 126744), (168, 121463), (184, 110901), (276, 73934), (322, 63372), (483, 42248), (552, 36967), (644, 31686), (966, 21124), (1288, 15843), (1932, 10562), (3864, 5281)]