81142840

素因数分解:

$2^3\times 5^1\times {\mathrm{127}}^1\times {\mathrm{15973}}^1$

素因数の和:16111

約数の個数: 32

約数和(自身を含む): 184020480

約数和(自身を除く): 102877640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 127, 254, 508, 635, 1016, 1270, 2540, 5080, 15973, 31946, 63892, 79865, 127784, 159730, 319460, 638920, 2028571, 4057142, 8114284, 10142855, 16228568, 20285710, 40571420, 81142840]

約数ペア:

[(1, 81142840), (2, 40571420), (4, 20285710), (5, 16228568), (8, 10142855), (10, 8114284), (20, 4057142), (40, 2028571), (127, 638920), (254, 319460), (508, 159730), (635, 127784), (1016, 79865), (1270, 63892), (2540, 31946), (5080, 15973)]