20512890974

素因数分解:

$2^1\times {\mathrm{41}}^1\times {\mathrm{131}}^1\times {\mathrm{449}}^1\times {\mathrm{4253}}^1$

素因数の和:4876

約数の個数: 32

約数和(自身を含む): 31838637600

約数和(自身を除く): 11325746626

約数列:

[1, 2, 41, 82, 131, 262, 449, 898, 4253, 5371, 8506, 10742, 18409, 36818, 58819, 117638, 174373, 348746, 557143, 1114286, 1909597, 2411579, 3819194, 4823158, 22842863, 45685726, 78293477, 156586954, 250157207, 500314414, 10256445487, 20512890974]

約数ペア:

[(1, 20512890974), (2, 10256445487), (41, 500314414), (82, 250157207), (131, 156586954), (262, 78293477), (449, 45685726), (898, 22842863), (4253, 4823158), (5371, 3819194), (8506, 2411579), (10742, 1909597), (18409, 1114286), (36818, 557143), (58819, 348746), (117638, 174373)]