2021123780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{71317}}^1$

素因数の和:71448

約数の個数: 48

約数和(自身を含む): 4612848240

約数和(自身を除く): 2591724460

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 109, 130, 218, 260, 436, 545, 1090, 1417, 2180, 2834, 5668, 7085, 14170, 28340, 71317, 142634, 285268, 356585, 713170, 927121, 1426340, 1854242, 3708484, 4635605, 7773553, 9271210, 15547106, 18542420, 31094212, 38867765, 77735530, 101056189, 155471060, 202112378, 404224756, 505280945, 1010561890, 2021123780]

約数ペア:

[(1, 2021123780), (2, 1010561890), (4, 505280945), (5, 404224756), (10, 202112378), (13, 155471060), (20, 101056189), (26, 77735530), (52, 38867765), (65, 31094212), (109, 18542420), (130, 15547106), (218, 9271210), (260, 7773553), (436, 4635605), (545, 3708484), (1090, 1854242), (1417, 1426340), (2180, 927121), (2834, 713170), (5668, 356585), (7085, 285268), (14170, 142634), (28340, 71317)]