77481880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{276721}}^1$

素因数の和:276739

約数の個数: 32

約数和(自身を含む): 199239840

約数和(自身を除く): 121757960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 276721, 553442, 1106884, 1383605, 1937047, 2213768, 2767210, 3874094, 5534420, 7748188, 9685235, 11068840, 15496376, 19370470, 38740940, 77481880]

約数ペア:

[(1, 77481880), (2, 38740940), (4, 19370470), (5, 15496376), (7, 11068840), (8, 9685235), (10, 7748188), (14, 5534420), (20, 3874094), (28, 2767210), (35, 2213768), (40, 1937047), (56, 1383605), (70, 1106884), (140, 553442), (280, 276721)]