81372231

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{269}}^1$

素因数の和:384

約数の個数: 48

約数和(自身を含む): 130572000

約数和(自身を除く): 49199769

約数列:

[1, 3, 9, 19, 29, 57, 61, 87, 171, 183, 261, 269, 549, 551, 807, 1159, 1653, 1769, 2421, 3477, 4959, 5111, 5307, 7801, 10431, 15333, 15921, 16409, 23403, 33611, 45999, 49227, 70209, 100833, 147681, 148219, 302499, 311771, 444657, 475861, 935313, 1333971, 1427583, 2805939, 4282749, 9041359, 27124077, 81372231]

約数ペア:

[(1, 81372231), (3, 27124077), (9, 9041359), (19, 4282749), (29, 2805939), (57, 1427583), (61, 1333971), (87, 935313), (171, 475861), (183, 444657), (261, 311771), (269, 302499), (549, 148219), (551, 147681), (807, 100833), (1159, 70209), (1653, 49227), (1769, 45999), (2421, 33611), (3477, 23403), (4959, 16409), (5111, 15921), (5307, 15333), (7801, 10431)]