128492780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{317}}^1\times {\mathrm{1559}}^1$

素因数の和:1898

約数の個数: 48

約数和(自身を含む): 291695040

約数和(自身を除く): 163202260

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 317, 634, 1268, 1559, 1585, 3118, 3170, 4121, 6236, 6340, 7795, 8242, 15590, 16484, 20267, 20605, 31180, 40534, 41210, 81068, 82420, 101335, 202670, 405340, 494203, 988406, 1976812, 2471015, 4942030, 6424639, 9884060, 12849278, 25698556, 32123195, 64246390, 128492780]

約数ペア:

[(1, 128492780), (2, 64246390), (4, 32123195), (5, 25698556), (10, 12849278), (13, 9884060), (20, 6424639), (26, 4942030), (52, 2471015), (65, 1976812), (130, 988406), (260, 494203), (317, 405340), (634, 202670), (1268, 101335), (1559, 82420), (1585, 81068), (3118, 41210), (3170, 40534), (4121, 31180), (6236, 20605), (6340, 20267), (7795, 16484), (8242, 15590)]