20181465616

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{708221}}^1$

素因数の和:708379

約数の個数: 40

約数和(自身を含む): 42416832024

約数和(自身を除く): 22235366408

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 137, 208, 274, 548, 1096, 1781, 2192, 3562, 7124, 14248, 28496, 708221, 1416442, 2832884, 5665768, 9206873, 11331536, 18413746, 36827492, 73654984, 97026277, 147309968, 194052554, 388105108, 776210216, 1261341601, 1552420432, 2522683202, 5045366404, 10090732808, 20181465616]

約数ペア:

[(1, 20181465616), (2, 10090732808), (4, 5045366404), (8, 2522683202), (13, 1552420432), (16, 1261341601), (26, 776210216), (52, 388105108), (104, 194052554), (137, 147309968), (208, 97026277), (274, 73654984), (548, 36827492), (1096, 18413746), (1781, 11331536), (2192, 9206873), (3562, 5665768), (7124, 2832884), (14248, 1416442), (28496, 708221)]