28128940

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{28703}}^1$

素因数の和:28726

約数の個数: 36

約数和(自身を含む): 68717376

約数和(自身を除く): 40588436

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 28703, 57406, 114812, 143515, 200921, 287030, 401842, 574060, 803684, 1004605, 1406447, 2009210, 2812894, 4018420, 5625788, 7032235, 14064470, 28128940]

約数ペア:

[(1, 28128940), (2, 14064470), (4, 7032235), (5, 5625788), (7, 4018420), (10, 2812894), (14, 2009210), (20, 1406447), (28, 1004605), (35, 803684), (49, 574060), (70, 401842), (98, 287030), (140, 200921), (196, 143515), (245, 114812), (490, 57406), (980, 28703)]