21000835431

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{157}}^1\times {\mathrm{512503}}^1$

素因数の和:512695

約数の個数: 24

約数和(自身を含む): 31580496480

約数和(自身を除く): 10579661049

約数列:

[1, 3, 9, 29, 87, 157, 261, 471, 1413, 4553, 13659, 40977, 512503, 1537509, 4612527, 14862587, 44587761, 80462971, 133763283, 241388913, 724166739, 2333426159, 7000278477, 21000835431]

約数ペア:

[(1, 21000835431), (3, 7000278477), (9, 2333426159), (29, 724166739), (87, 241388913), (157, 133763283), (261, 80462971), (471, 44587761), (1413, 14862587), (4553, 4612527), (13659, 1537509), (40977, 512503)]