21037497

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{239}}^1$

素因数の和:353

約数の個数: 32

約数和(自身を含む): 31664640

約数和(自身を除く): 10627143

約数列:

[1, 3, 13, 37, 39, 61, 111, 183, 239, 481, 717, 793, 1443, 2257, 2379, 3107, 6771, 8843, 9321, 14579, 26529, 29341, 43737, 88023, 114959, 189527, 344877, 539423, 568581, 1618269, 7012499, 21037497]

約数ペア:

[(1, 21037497), (3, 7012499), (13, 1618269), (37, 568581), (39, 539423), (61, 344877), (111, 189527), (183, 114959), (239, 88023), (481, 43737), (717, 29341), (793, 26529), (1443, 14579), (2257, 9321), (2379, 8843), (3107, 6771)]