7885507820

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{208501}}^1$

素因数の和:208602

約数の個数: 48

約数和(自身を含む): 17374054656

約数和(自身を除く): 9488546836

約数列:

[1, 2, 4, 5, 10, 20, 31, 61, 62, 122, 124, 155, 244, 305, 310, 610, 620, 1220, 1891, 3782, 7564, 9455, 18910, 37820, 208501, 417002, 834004, 1042505, 2085010, 4170020, 6463531, 12718561, 12927062, 25437122, 25854124, 32317655, 50874244, 63592805, 64635310, 127185610, 129270620, 254371220, 394275391, 788550782, 1577101564, 1971376955, 3942753910, 7885507820]

約数ペア:

[(1, 7885507820), (2, 3942753910), (4, 1971376955), (5, 1577101564), (10, 788550782), (20, 394275391), (31, 254371220), (61, 129270620), (62, 127185610), (122, 64635310), (124, 63592805), (155, 50874244), (244, 32317655), (305, 25854124), (310, 25437122), (610, 12927062), (620, 12718561), (1220, 6463531), (1891, 4170020), (3782, 2085010), (7564, 1042505), (9455, 834004), (18910, 417002), (37820, 208501)]