20581672

素因数分解:

$2^3\times {\mathrm{41}}^1\times {\mathrm{131}}^1\times {\mathrm{479}}^1$

素因数の和:657

約数の個数: 32

約数和(自身を含む): 39916800

約数和(自身を除く): 19335128

約数列:

[1, 2, 4, 8, 41, 82, 131, 164, 262, 328, 479, 524, 958, 1048, 1916, 3832, 5371, 10742, 19639, 21484, 39278, 42968, 62749, 78556, 125498, 157112, 250996, 501992, 2572709, 5145418, 10290836, 20581672]

約数ペア:

[(1, 20581672), (2, 10290836), (4, 5145418), (8, 2572709), (41, 501992), (82, 250996), (131, 157112), (164, 125498), (262, 78556), (328, 62749), (479, 42968), (524, 39278), (958, 21484), (1048, 19639), (1916, 10742), (3832, 5371)]