20686096

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{107}}^1\times {\mathrm{281}}^1$

素因数の和:439

約数の個数: 40

約数和(自身を含む): 41541984

約数和(自身を除く): 20855888

約数列:

[1, 2, 4, 8, 16, 43, 86, 107, 172, 214, 281, 344, 428, 562, 688, 856, 1124, 1712, 2248, 4496, 4601, 9202, 12083, 18404, 24166, 30067, 36808, 48332, 60134, 73616, 96664, 120268, 193328, 240536, 481072, 1292881, 2585762, 5171524, 10343048, 20686096]

約数ペア:

[(1, 20686096), (2, 10343048), (4, 5171524), (8, 2585762), (16, 1292881), (43, 481072), (86, 240536), (107, 193328), (172, 120268), (214, 96664), (281, 73616), (344, 60134), (428, 48332), (562, 36808), (688, 30067), (856, 24166), (1124, 18404), (1712, 12083), (2248, 9202), (4496, 4601)]