64389640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{229963}}^1$

素因数の和:229981

約数の個数: 32

約数和(自身を含む): 165574080

約数和(自身を除く): 101184440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 229963, 459926, 919852, 1149815, 1609741, 1839704, 2299630, 3219482, 4599260, 6438964, 8048705, 9198520, 12877928, 16097410, 32194820, 64389640]

約数ペア:

[(1, 64389640), (2, 32194820), (4, 16097410), (5, 12877928), (7, 9198520), (8, 8048705), (10, 6438964), (14, 4599260), (20, 3219482), (28, 2299630), (35, 1839704), (40, 1609741), (56, 1149815), (70, 919852), (140, 459926), (280, 229963)]