256066520

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{220747}}^1$

素因数の和:220787

約数の個数: 32

約数和(自身を含む): 596019600

約数和(自身を除く): 339953080

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 116, 145, 232, 290, 580, 1160, 220747, 441494, 882988, 1103735, 1765976, 2207470, 4414940, 6401663, 8829880, 12803326, 25606652, 32008315, 51213304, 64016630, 128033260, 256066520]

約数ペア:

[(1, 256066520), (2, 128033260), (4, 64016630), (5, 51213304), (8, 32008315), (10, 25606652), (20, 12803326), (29, 8829880), (40, 6401663), (58, 4414940), (116, 2207470), (145, 1765976), (232, 1103735), (290, 882988), (580, 441494), (1160, 220747)]