201418420

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{205529}}^1$

素因数の和:205552

約数の個数: 36

約数和(自身を含む): 492038820

約数和(自身を除く): 290620400

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 205529, 411058, 822116, 1027645, 1438703, 2055290, 2877406, 4110580, 5754812, 7193515, 10070921, 14387030, 20141842, 28774060, 40283684, 50354605, 100709210, 201418420]

約数ペア:

[(1, 201418420), (2, 100709210), (4, 50354605), (5, 40283684), (7, 28774060), (10, 20141842), (14, 14387030), (20, 10070921), (28, 7193515), (35, 5754812), (49, 4110580), (70, 2877406), (98, 2055290), (140, 1438703), (196, 1027645), (245, 822116), (490, 411058), (980, 205529)]