128947100

素因数分解:

$2^2\times 5^2\times {\mathrm{647}}^1\times {\mathrm{1993}}^1$

素因数の和:2654

約数の個数: 36

約数和(自身を含む): 280388304

約数和(自身を除く): 151441204

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 647, 1294, 1993, 2588, 3235, 3986, 6470, 7972, 9965, 12940, 16175, 19930, 32350, 39860, 49825, 64700, 99650, 199300, 1289471, 2578942, 5157884, 6447355, 12894710, 25789420, 32236775, 64473550, 128947100]

約数ペア:

[(1, 128947100), (2, 64473550), (4, 32236775), (5, 25789420), (10, 12894710), (20, 6447355), (25, 5157884), (50, 2578942), (100, 1289471), (647, 199300), (1294, 99650), (1993, 64700), (2588, 49825), (3235, 39860), (3986, 32350), (6470, 19930), (7972, 16175), (9965, 12940)]