31980100

素因数分解:

$2^2\times 5^2\times {\mathrm{193}}^1\times {\mathrm{1657}}^1$

素因数の和:1864

約数の個数: 36

約数和(自身を含む): 69798484

約数和(自身を除く): 37818384

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 193, 386, 772, 965, 1657, 1930, 3314, 3860, 4825, 6628, 8285, 9650, 16570, 19300, 33140, 41425, 82850, 165700, 319801, 639602, 1279204, 1599005, 3198010, 6396020, 7995025, 15990050, 31980100]

約数ペア:

[(1, 31980100), (2, 15990050), (4, 7995025), (5, 6396020), (10, 3198010), (20, 1599005), (25, 1279204), (50, 639602), (100, 319801), (193, 165700), (386, 82850), (772, 41425), (965, 33140), (1657, 19300), (1930, 16570), (3314, 9650), (3860, 8285), (4825, 6628)]