81871860

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{194933}}^1$

素因数の和:194952

約数の個数: 48

約数和(自身を含む): 261991296

約数和(自身を除く): 180119436

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 194933, 389866, 584799, 779732, 974665, 1169598, 1364531, 1949330, 2339196, 2729062, 2923995, 3898660, 4093593, 5458124, 5847990, 6822655, 8187186, 11695980, 13645310, 16374372, 20467965, 27290620, 40935930, 81871860]

約数ペア:

[(1, 81871860), (2, 40935930), (3, 27290620), (4, 20467965), (5, 16374372), (6, 13645310), (7, 11695980), (10, 8187186), (12, 6822655), (14, 5847990), (15, 5458124), (20, 4093593), (21, 3898660), (28, 2923995), (30, 2729062), (35, 2339196), (42, 1949330), (60, 1364531), (70, 1169598), (84, 974665), (105, 779732), (140, 584799), (210, 389866), (420, 194933)]