128756656

素因数分解:

$2^4\times 7^1\times {\mathrm{89}}^1\times {\mathrm{12917}}^1$

素因数の和:13021

約数の個数: 40

約数和(自身を含む): 288329760

約数和(自身を除く): 159573104

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 89, 112, 178, 356, 623, 712, 1246, 1424, 2492, 4984, 9968, 12917, 25834, 51668, 90419, 103336, 180838, 206672, 361676, 723352, 1149613, 1446704, 2299226, 4598452, 8047291, 9196904, 16094582, 18393808, 32189164, 64378328, 128756656]

約数ペア:

[(1, 128756656), (2, 64378328), (4, 32189164), (7, 18393808), (8, 16094582), (14, 9196904), (16, 8047291), (28, 4598452), (56, 2299226), (89, 1446704), (112, 1149613), (178, 723352), (356, 361676), (623, 206672), (712, 180838), (1246, 103336), (1424, 90419), (2492, 51668), (4984, 25834), (9968, 12917)]