81855160

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{193}}^1\times {\mathrm{461}}^1$

素因数の和:688

約数の個数: 64

約数和(自身を含む): 193596480

約数和(自身を除く): 111741320

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 92, 115, 184, 193, 230, 386, 460, 461, 772, 920, 922, 965, 1544, 1844, 1930, 2305, 3688, 3860, 4439, 4610, 7720, 8878, 9220, 10603, 17756, 18440, 21206, 22195, 35512, 42412, 44390, 53015, 84824, 88780, 88973, 106030, 177560, 177946, 212060, 355892, 424120, 444865, 711784, 889730, 1779460, 2046379, 3558920, 4092758, 8185516, 10231895, 16371032, 20463790, 40927580, 81855160]

約数ペア:

[(1, 81855160), (2, 40927580), (4, 20463790), (5, 16371032), (8, 10231895), (10, 8185516), (20, 4092758), (23, 3558920), (40, 2046379), (46, 1779460), (92, 889730), (115, 711784), (184, 444865), (193, 424120), (230, 355892), (386, 212060), (460, 177946), (461, 177560), (772, 106030), (920, 88973), (922, 88780), (965, 84824), (1544, 53015), (1844, 44390), (1930, 42412), (2305, 35512), (3688, 22195), (3860, 21206), (4439, 18440), (4610, 17756), (7720, 10603), (8878, 9220)]