19940305

素因数分解:

$5^1\times 7^4\times {\mathrm{11}}^1\times {\mathrm{151}}^1$

素因数の和:195

約数の個数: 40

約数和(自身を含む): 30654144

約数和(自身を除く): 10713839

約数列:

[1, 5, 7, 11, 35, 49, 55, 77, 151, 245, 343, 385, 539, 755, 1057, 1661, 1715, 2401, 2695, 3773, 5285, 7399, 8305, 11627, 12005, 18865, 26411, 36995, 51793, 58135, 81389, 132055, 258965, 362551, 406945, 569723, 1812755, 2848615, 3988061, 19940305]

約数ペア:

[(1, 19940305), (5, 3988061), (7, 2848615), (11, 1812755), (35, 569723), (49, 406945), (55, 362551), (77, 258965), (151, 132055), (245, 81389), (343, 58135), (385, 51793), (539, 36995), (755, 26411), (1057, 18865), (1661, 12005), (1715, 11627), (2401, 8305), (2695, 7399), (3773, 5285)]