66140420

素因数分解:

$2^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{103}}^1\times {\mathrm{331}}^1$

素因数の和:540

約数の個数: 48

約数和(自身を含む): 142117248

約数和(自身を除く): 75976828

約数列:

[1, 2, 4, 5, 10, 20, 97, 103, 194, 206, 331, 388, 412, 485, 515, 662, 970, 1030, 1324, 1655, 1940, 2060, 3310, 6620, 9991, 19982, 32107, 34093, 39964, 49955, 64214, 68186, 99910, 128428, 136372, 160535, 170465, 199820, 321070, 340930, 642140, 681860, 3307021, 6614042, 13228084, 16535105, 33070210, 66140420]

約数ペア:

[(1, 66140420), (2, 33070210), (4, 16535105), (5, 13228084), (10, 6614042), (20, 3307021), (97, 681860), (103, 642140), (194, 340930), (206, 321070), (331, 199820), (388, 170465), (412, 160535), (485, 136372), (515, 128428), (662, 99910), (970, 68186), (1030, 64214), (1324, 49955), (1655, 39964), (1940, 34093), (2060, 32107), (3310, 19982), (6620, 9991)]