81228515

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{107}}^1\times {\mathrm{131}}^1$

素因数の和:323

約数の個数: 32

約数和(自身を含む): 106064640

約数和(自身を除く): 24836125

約数列:

[1, 5, 19, 61, 95, 107, 131, 305, 535, 655, 1159, 2033, 2489, 5795, 6527, 7991, 10165, 12445, 14017, 32635, 39955, 70085, 124013, 151829, 266323, 620065, 759145, 855037, 1331615, 4275185, 16245703, 81228515]

約数ペア:

[(1, 81228515), (5, 16245703), (19, 4275185), (61, 1331615), (95, 855037), (107, 759145), (131, 620065), (305, 266323), (535, 151829), (655, 124013), (1159, 70085), (2033, 39955), (2489, 32635), (5795, 14017), (6527, 12445), (7991, 10165)]