720821697

素因数分解:

$3^1\times {\mathrm{41}}^1\times {\mathrm{157}}^1\times {\mathrm{163}}^1\times {\mathrm{229}}^1$

素因数の和:593

約数の個数: 32

約数和(自身を含む): 1001239680

約数和(自身を除く): 280417983

約数列:

[1, 3, 41, 123, 157, 163, 229, 471, 489, 687, 6437, 6683, 9389, 19311, 20049, 25591, 28167, 35953, 37327, 76773, 107859, 111981, 1049231, 1474073, 1530407, 3147693, 4422219, 4591221, 5860339, 17581017, 240273899, 720821697]

約数ペア:

[(1, 720821697), (3, 240273899), (41, 17581017), (123, 5860339), (157, 4591221), (163, 4422219), (229, 3147693), (471, 1530407), (489, 1474073), (687, 1049231), (6437, 111981), (6683, 107859), (9389, 76773), (19311, 37327), (20049, 35953), (25591, 28167)]