12212980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{439}}^1$

素因数の和:568

約数の個数: 48

約数和(自身を含む): 27941760

約数和(自身を除く): 15728780

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 107, 130, 214, 260, 428, 439, 535, 878, 1070, 1391, 1756, 2140, 2195, 2782, 4390, 5564, 5707, 6955, 8780, 11414, 13910, 22828, 27820, 28535, 46973, 57070, 93946, 114140, 187892, 234865, 469730, 610649, 939460, 1221298, 2442596, 3053245, 6106490, 12212980]

約数ペア:

[(1, 12212980), (2, 6106490), (4, 3053245), (5, 2442596), (10, 1221298), (13, 939460), (20, 610649), (26, 469730), (52, 234865), (65, 187892), (107, 114140), (130, 93946), (214, 57070), (260, 46973), (428, 28535), (439, 27820), (535, 22828), (878, 13910), (1070, 11414), (1391, 8780), (1756, 6955), (2140, 5707), (2195, 5564), (2782, 4390)]