78364940

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{227}}^1\times {\mathrm{421}}^1$

素因数の和:698

約数の個数: 48

約数和(自身を含む): 169725024

約数和(自身を除く): 91360084

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 227, 410, 421, 454, 820, 842, 908, 1135, 1684, 2105, 2270, 4210, 4540, 8420, 9307, 17261, 18614, 34522, 37228, 46535, 69044, 86305, 93070, 95567, 172610, 186140, 191134, 345220, 382268, 477835, 955670, 1911340, 3918247, 7836494, 15672988, 19591235, 39182470, 78364940]

約数ペア:

[(1, 78364940), (2, 39182470), (4, 19591235), (5, 15672988), (10, 7836494), (20, 3918247), (41, 1911340), (82, 955670), (164, 477835), (205, 382268), (227, 345220), (410, 191134), (421, 186140), (454, 172610), (820, 95567), (842, 93070), (908, 86305), (1135, 69044), (1684, 46535), (2105, 37228), (2270, 34522), (4210, 18614), (4540, 17261), (8420, 9307)]