21431943

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{311}}^1$

素因数の和:380

約数の個数: 48

約数和(自身を含む): 36341760

約数和(自身を除く): 14909817

約数列:

[1, 3, 9, 13, 19, 31, 39, 57, 93, 117, 171, 247, 279, 311, 403, 589, 741, 933, 1209, 1767, 2223, 2799, 3627, 4043, 5301, 5909, 7657, 9641, 12129, 17727, 22971, 28923, 36387, 53181, 68913, 76817, 86769, 125333, 183179, 230451, 375999, 549537, 691353, 1127997, 1648611, 2381327, 7143981, 21431943]

約数ペア:

[(1, 21431943), (3, 7143981), (9, 2381327), (13, 1648611), (19, 1127997), (31, 691353), (39, 549537), (57, 375999), (93, 230451), (117, 183179), (171, 125333), (247, 86769), (279, 76817), (311, 68913), (403, 53181), (589, 36387), (741, 28923), (933, 22971), (1209, 17727), (1767, 12129), (2223, 9641), (2799, 7657), (3627, 5909), (4043, 5301)]