21177963

素因数分解:

$3^3\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{509}}^1$

素因数の和:608

約数の個数: 32

約数和(自身を含む): 33292800

約数和(自身を除く): 12114837

約数列:

[1, 3, 9, 23, 27, 67, 69, 201, 207, 509, 603, 621, 1527, 1541, 1809, 4581, 4623, 11707, 13743, 13869, 34103, 35121, 41607, 102309, 105363, 306927, 316089, 784369, 920781, 2353107, 7059321, 21177963]

約数ペア:

[(1, 21177963), (3, 7059321), (9, 2353107), (23, 920781), (27, 784369), (67, 316089), (69, 306927), (201, 105363), (207, 102309), (509, 41607), (603, 35121), (621, 34103), (1527, 13869), (1541, 13743), (1809, 11707), (4581, 4623)]