25565000

素因数分解:

$2^3\times 5^4\times {\mathrm{5113}}^1$

素因数の和:5139

約数の個数: 40

約数和(自身を含む): 59910510

約数和(自身を除く): 34345510

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 200, 250, 500, 625, 1000, 1250, 2500, 5000, 5113, 10226, 20452, 25565, 40904, 51130, 102260, 127825, 204520, 255650, 511300, 639125, 1022600, 1278250, 2556500, 3195625, 5113000, 6391250, 12782500, 25565000]

約数ペア:

[(1, 25565000), (2, 12782500), (4, 6391250), (5, 5113000), (8, 3195625), (10, 2556500), (20, 1278250), (25, 1022600), (40, 639125), (50, 511300), (100, 255650), (125, 204520), (200, 127825), (250, 102260), (500, 51130), (625, 40904), (1000, 25565), (1250, 20452), (2500, 10226), (5000, 5113)]