20979390

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{47}}^1\times {\mathrm{14879}}^1$

素因数の和:14936

約数の個数: 32

約数和(自身を含む): 51425280

約数和(自身を除く): 30445890

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 47, 94, 141, 235, 282, 470, 705, 1410, 14879, 29758, 44637, 74395, 89274, 148790, 223185, 446370, 699313, 1398626, 2097939, 3496565, 4195878, 6993130, 10489695, 20979390]

約数ペア:

[(1, 20979390), (2, 10489695), (3, 6993130), (5, 4195878), (6, 3496565), (10, 2097939), (15, 1398626), (30, 699313), (47, 446370), (94, 223185), (141, 148790), (235, 89274), (282, 74395), (470, 44637), (705, 29758), (1410, 14879)]