18820893

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{971}}^1$

素因数の和:1065

約数の個数: 32

約数和(自身を含む): 31352832

約数和(自身を除く): 12531939

約数列:

[1, 3, 7, 13, 21, 39, 71, 91, 213, 273, 497, 923, 971, 1491, 2769, 2913, 6461, 6797, 12623, 19383, 20391, 37869, 68941, 88361, 206823, 265083, 482587, 896233, 1447761, 2688699, 6273631, 18820893]

約数ペア:

[(1, 18820893), (3, 6273631), (7, 2688699), (13, 1447761), (21, 896233), (39, 482587), (71, 265083), (91, 206823), (213, 88361), (273, 68941), (497, 37869), (923, 20391), (971, 19383), (1491, 12623), (2769, 6797), (2913, 6461)]