78163720

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^2\times {\mathrm{5413}}^1$

素因数の和:5462

約数の個数: 48

約数和(自身を含む): 185646060

約数和(自身を除く): 107482340

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 361, 380, 722, 760, 1444, 1805, 2888, 3610, 5413, 7220, 10826, 14440, 21652, 27065, 43304, 54130, 102847, 108260, 205694, 216520, 411388, 514235, 822776, 1028470, 1954093, 2056940, 3908186, 4113880, 7816372, 9770465, 15632744, 19540930, 39081860, 78163720]

約数ペア:

[(1, 78163720), (2, 39081860), (4, 19540930), (5, 15632744), (8, 9770465), (10, 7816372), (19, 4113880), (20, 3908186), (38, 2056940), (40, 1954093), (76, 1028470), (95, 822776), (152, 514235), (190, 411388), (361, 216520), (380, 205694), (722, 108260), (760, 102847), (1444, 54130), (1805, 43304), (2888, 27065), (3610, 21652), (5413, 14440), (7220, 10826)]