64487900

素因数分解:

$2^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{33941}}^1$

素因数の和:33974

約数の個数: 36

約数和(自身を含む): 147308280

約数和(自身を除く): 82820380

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 38, 50, 76, 95, 100, 190, 380, 475, 950, 1900, 33941, 67882, 135764, 169705, 339410, 644879, 678820, 848525, 1289758, 1697050, 2579516, 3224395, 3394100, 6448790, 12897580, 16121975, 32243950, 64487900]

約数ペア:

[(1, 64487900), (2, 32243950), (4, 16121975), (5, 12897580), (10, 6448790), (19, 3394100), (20, 3224395), (25, 2579516), (38, 1697050), (50, 1289758), (76, 848525), (95, 678820), (100, 644879), (190, 339410), (380, 169705), (475, 135764), (950, 67882), (1900, 33941)]