20051290

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{151}}^1\times {\mathrm{271}}^1$

素因数の和:443

約数の個数: 48

約数和(自身を含む): 42418944

約数和(自身を除く): 22367654

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 151, 245, 271, 302, 490, 542, 755, 1057, 1355, 1510, 1897, 2114, 2710, 3794, 5285, 7399, 9485, 10570, 13279, 14798, 18970, 26558, 36995, 40921, 66395, 73990, 81842, 132790, 204605, 286447, 409210, 572894, 1432235, 2005129, 2864470, 4010258, 10025645, 20051290]

約数ペア:

[(1, 20051290), (2, 10025645), (5, 4010258), (7, 2864470), (10, 2005129), (14, 1432235), (35, 572894), (49, 409210), (70, 286447), (98, 204605), (151, 132790), (245, 81842), (271, 73990), (302, 66395), (490, 40921), (542, 36995), (755, 26558), (1057, 18970), (1355, 14798), (1510, 13279), (1897, 10570), (2114, 9485), (2710, 7399), (3794, 5285)]