81278520

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{677321}}^1$

素因数の和:677335

約数の個数: 32

約数和(自身を含む): 243835920

約数和(自身を除く): 162557400

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 677321, 1354642, 2031963, 2709284, 3386605, 4063926, 5418568, 6773210, 8127852, 10159815, 13546420, 16255704, 20319630, 27092840, 40639260, 81278520]

約数ペア:

[(1, 81278520), (2, 40639260), (3, 27092840), (4, 20319630), (5, 16255704), (6, 13546420), (8, 10159815), (10, 8127852), (12, 6773210), (15, 5418568), (20, 4063926), (24, 3386605), (30, 2709284), (40, 2031963), (60, 1354642), (120, 677321)]