77706680

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{31847}}^1$

素因数の和:31919

約数の個数: 32

約数和(自身を含む): 177711840

約数和(自身を除く): 100005160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 31847, 63694, 127388, 159235, 254776, 318470, 636940, 1273880, 1942667, 3885334, 7770668, 9713335, 15541336, 19426670, 38853340, 77706680]

約数ペア:

[(1, 77706680), (2, 38853340), (4, 19426670), (5, 15541336), (8, 9713335), (10, 7770668), (20, 3885334), (40, 1942667), (61, 1273880), (122, 636940), (244, 318470), (305, 254776), (488, 159235), (610, 127388), (1220, 63694), (2440, 31847)]