99999380

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{2767}}^1$

素因数の和:2928

約数の個数: 48

約数和(自身を含む): 227861760

約数和(自身を除く): 127862380

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 139, 260, 278, 556, 695, 1390, 1807, 2767, 2780, 3614, 5534, 7228, 9035, 11068, 13835, 18070, 27670, 35971, 36140, 55340, 71942, 143884, 179855, 359710, 384613, 719420, 769226, 1538452, 1923065, 3846130, 4999969, 7692260, 9999938, 19999876, 24999845, 49999690, 99999380]

約数ペア:

[(1, 99999380), (2, 49999690), (4, 24999845), (5, 19999876), (10, 9999938), (13, 7692260), (20, 4999969), (26, 3846130), (52, 1923065), (65, 1538452), (130, 769226), (139, 719420), (260, 384613), (278, 359710), (556, 179855), (695, 143884), (1390, 71942), (1807, 55340), (2767, 36140), (2780, 35971), (3614, 27670), (5534, 18070), (7228, 13835), (9035, 11068)]