128400740

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{479}}^1\times {\mathrm{1031}}^1$

素因数の和:1532

約数の個数: 48

約数和(自身を含む): 291271680

約数和(自身を除く): 162870940

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 479, 958, 1031, 1916, 2062, 2395, 4124, 4790, 5155, 6227, 9580, 10310, 12454, 13403, 20620, 24908, 26806, 31135, 53612, 62270, 67015, 124540, 134030, 268060, 493849, 987698, 1975396, 2469245, 4938490, 6420037, 9876980, 12840074, 25680148, 32100185, 64200370, 128400740]

約数ペア:

[(1, 128400740), (2, 64200370), (4, 32100185), (5, 25680148), (10, 12840074), (13, 9876980), (20, 6420037), (26, 4938490), (52, 2469245), (65, 1975396), (130, 987698), (260, 493849), (479, 268060), (958, 134030), (1031, 124540), (1916, 67015), (2062, 62270), (2395, 53612), (4124, 31135), (4790, 26806), (5155, 24908), (6227, 20620), (9580, 13403), (10310, 12454)]