21684650

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{457}}^1$

素因数の和:555

約数の個数: 48

約数和(自身を含む): 44127384

約数和(自身を除く): 22442734

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 73, 130, 146, 325, 365, 457, 650, 730, 914, 949, 1825, 1898, 2285, 3650, 4570, 4745, 5941, 9490, 11425, 11882, 22850, 23725, 29705, 33361, 47450, 59410, 66722, 148525, 166805, 297050, 333610, 433693, 834025, 867386, 1668050, 2168465, 4336930, 10842325, 21684650]

約数ペア:

[(1, 21684650), (2, 10842325), (5, 4336930), (10, 2168465), (13, 1668050), (25, 867386), (26, 834025), (50, 433693), (65, 333610), (73, 297050), (130, 166805), (146, 148525), (325, 66722), (365, 59410), (457, 47450), (650, 33361), (730, 29705), (914, 23725), (949, 22850), (1825, 11882), (1898, 11425), (2285, 9490), (3650, 5941), (4570, 4745)]