648291220

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{24317}}^1$

素因数の和:24400

約数の個数: 48

約数和(自身を含む): 1438069248

約数和(自身を除く): 789778028

約数列:

[1, 2, 4, 5, 10, 20, 31, 43, 62, 86, 124, 155, 172, 215, 310, 430, 620, 860, 1333, 2666, 5332, 6665, 13330, 24317, 26660, 48634, 97268, 121585, 243170, 486340, 753827, 1045631, 1507654, 2091262, 3015308, 3769135, 4182524, 5228155, 7538270, 10456310, 15076540, 20912620, 32414561, 64829122, 129658244, 162072805, 324145610, 648291220]

約数ペア:

[(1, 648291220), (2, 324145610), (4, 162072805), (5, 129658244), (10, 64829122), (20, 32414561), (31, 20912620), (43, 15076540), (62, 10456310), (86, 7538270), (124, 5228155), (155, 4182524), (172, 3769135), (215, 3015308), (310, 2091262), (430, 1507654), (620, 1045631), (860, 753827), (1333, 486340), (2666, 243170), (5332, 121585), (6665, 97268), (13330, 48634), (24317, 26660)]