20504260

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{167}}^1\times {\mathrm{877}}^1$

素因数の和:1060

約数の個数: 48

約数和(自身を含む): 49561344

約数和(自身を除く): 29057084

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 167, 334, 668, 835, 877, 1169, 1670, 1754, 2338, 3340, 3508, 4385, 4676, 5845, 6139, 8770, 11690, 12278, 17540, 23380, 24556, 30695, 61390, 122780, 146459, 292918, 585836, 732295, 1025213, 1464590, 2050426, 2929180, 4100852, 5126065, 10252130, 20504260]

約数ペア:

[(1, 20504260), (2, 10252130), (4, 5126065), (5, 4100852), (7, 2929180), (10, 2050426), (14, 1464590), (20, 1025213), (28, 732295), (35, 585836), (70, 292918), (140, 146459), (167, 122780), (334, 61390), (668, 30695), (835, 24556), (877, 23380), (1169, 17540), (1670, 12278), (1754, 11690), (2338, 8770), (3340, 6139), (3508, 5845), (4385, 4676)]