256384400

素因数分解:

$2^4\times 5^2\times {\mathrm{281}}^1\times {\mathrm{2281}}^1$

素因数の和:2580

約数の個数: 60

約数和(自身を含む): 618426564

約数和(自身を除く): 362042164

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 281, 400, 562, 1124, 1405, 2248, 2281, 2810, 4496, 4562, 5620, 7025, 9124, 11240, 11405, 14050, 18248, 22480, 22810, 28100, 36496, 45620, 56200, 57025, 91240, 112400, 114050, 182480, 228100, 456200, 640961, 912400, 1281922, 2563844, 3204805, 5127688, 6409610, 10255376, 12819220, 16024025, 25638440, 32048050, 51276880, 64096100, 128192200, 256384400]

約数ペア:

[(1, 256384400), (2, 128192200), (4, 64096100), (5, 51276880), (8, 32048050), (10, 25638440), (16, 16024025), (20, 12819220), (25, 10255376), (40, 6409610), (50, 5127688), (80, 3204805), (100, 2563844), (200, 1281922), (281, 912400), (400, 640961), (562, 456200), (1124, 228100), (1405, 182480), (2248, 114050), (2281, 112400), (2810, 91240), (4496, 57025), (4562, 56200), (5620, 45620), (7025, 36496), (9124, 28100), (11240, 22810), (11405, 22480), (14050, 18248)]