64805540

素因数分解:

$2^2\times 5^1\times {\mathrm{103}}^1\times {\mathrm{163}}^1\times {\mathrm{193}}^1$

素因数の和:468

約数の個数: 48

約数和(自身を含む): 138972288

約数和(自身を除く): 74166748

約数列:

[1, 2, 4, 5, 10, 20, 103, 163, 193, 206, 326, 386, 412, 515, 652, 772, 815, 965, 1030, 1630, 1930, 2060, 3260, 3860, 16789, 19879, 31459, 33578, 39758, 62918, 67156, 79516, 83945, 99395, 125836, 157295, 167890, 198790, 314590, 335780, 397580, 629180, 3240277, 6480554, 12961108, 16201385, 32402770, 64805540]

約数ペア:

[(1, 64805540), (2, 32402770), (4, 16201385), (5, 12961108), (10, 6480554), (20, 3240277), (103, 629180), (163, 397580), (193, 335780), (206, 314590), (326, 198790), (386, 167890), (412, 157295), (515, 125836), (652, 99395), (772, 83945), (815, 79516), (965, 67156), (1030, 62918), (1630, 39758), (1930, 33578), (2060, 31459), (3260, 19879), (3860, 16789)]