21721016

素因数分解:

$2^3\times {\mathrm{23}}^1\times {\mathrm{97}}^1\times {\mathrm{1217}}^1$

素因数の和:1343

約数の個数: 32

約数和(自身を含む): 42971040

約数和(自身を除く): 21250024

約数列:

[1, 2, 4, 8, 23, 46, 92, 97, 184, 194, 388, 776, 1217, 2231, 2434, 4462, 4868, 8924, 9736, 17848, 27991, 55982, 111964, 118049, 223928, 236098, 472196, 944392, 2715127, 5430254, 10860508, 21721016]

約数ペア:

[(1, 21721016), (2, 10860508), (4, 5430254), (8, 2715127), (23, 944392), (46, 472196), (92, 236098), (97, 223928), (184, 118049), (194, 111964), (388, 55982), (776, 27991), (1217, 17848), (2231, 9736), (2434, 8924), (4462, 4868)]