81427521

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^2\times {\mathrm{23}}^1\times {\mathrm{467}}^1$

素因数の和:538

約数の個数: 48

約数和(自身を含む): 136940544

約数和(自身を除く): 55513023

約数列:

[1, 3, 7, 19, 21, 23, 57, 69, 133, 161, 361, 399, 437, 467, 483, 1083, 1311, 1401, 2527, 3059, 3269, 7581, 8303, 8873, 9177, 9807, 10741, 24909, 26619, 32223, 58121, 62111, 75187, 168587, 174363, 186333, 204079, 225561, 505761, 612237, 1180109, 1428553, 3540327, 3877501, 4285659, 11632503, 27142507, 81427521]

約数ペア:

[(1, 81427521), (3, 27142507), (7, 11632503), (19, 4285659), (21, 3877501), (23, 3540327), (57, 1428553), (69, 1180109), (133, 612237), (161, 505761), (361, 225561), (399, 204079), (437, 186333), (467, 174363), (483, 168587), (1083, 75187), (1311, 62111), (1401, 58121), (2527, 32223), (3059, 26619), (3269, 24909), (7581, 10741), (8303, 9807), (8873, 9177)]