19900426

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^3\times {\mathrm{647}}^1$

素因数の和:695

約数の個数: 32

約数和(自身を含む): 37013760

約数和(自身を除く): 17113334

約数列:

[1, 2, 7, 13, 14, 26, 91, 169, 182, 338, 647, 1183, 1294, 2197, 2366, 4394, 4529, 8411, 9058, 15379, 16822, 30758, 58877, 109343, 117754, 218686, 765401, 1421459, 1530802, 2842918, 9950213, 19900426]

約数ペア:

[(1, 19900426), (2, 9950213), (7, 2842918), (13, 1530802), (14, 1421459), (26, 765401), (91, 218686), (169, 117754), (182, 109343), (338, 58877), (647, 30758), (1183, 16822), (1294, 15379), (2197, 9058), (2366, 8411), (4394, 4529)]