13215940

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{227}}^1$

素因数の和:348

約数の個数: 48

約数和(自身を含む): 28957824

約数和(自身を除く): 15741884

約数列:

[1, 2, 4, 5, 10, 20, 41, 71, 82, 142, 164, 205, 227, 284, 355, 410, 454, 710, 820, 908, 1135, 1420, 2270, 2911, 4540, 5822, 9307, 11644, 14555, 16117, 18614, 29110, 32234, 37228, 46535, 58220, 64468, 80585, 93070, 161170, 186140, 322340, 660797, 1321594, 2643188, 3303985, 6607970, 13215940]

約数ペア:

[(1, 13215940), (2, 6607970), (4, 3303985), (5, 2643188), (10, 1321594), (20, 660797), (41, 322340), (71, 186140), (82, 161170), (142, 93070), (164, 80585), (205, 64468), (227, 58220), (284, 46535), (355, 37228), (410, 32234), (454, 29110), (710, 18614), (820, 16117), (908, 14555), (1135, 11644), (1420, 9307), (2270, 5822), (2911, 4540)]