1025000

素因数分解:

$2^3\times 5^5\times {\mathrm{41}}^1$

素因数の和:72

約数の個数: 48

約数和(自身を含む): 2460780

約数和(自身を除く): 1435780

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 41, 50, 82, 100, 125, 164, 200, 205, 250, 328, 410, 500, 625, 820, 1000, 1025, 1250, 1640, 2050, 2500, 3125, 4100, 5000, 5125, 6250, 8200, 10250, 12500, 20500, 25000, 25625, 41000, 51250, 102500, 128125, 205000, 256250, 512500, 1025000]

約数ペア:

[(1, 1025000), (2, 512500), (4, 256250), (5, 205000), (8, 128125), (10, 102500), (20, 51250), (25, 41000), (40, 25625), (41, 25000), (50, 20500), (82, 12500), (100, 10250), (125, 8200), (164, 6250), (200, 5125), (205, 5000), (250, 4100), (328, 3125), (410, 2500), (500, 2050), (625, 1640), (820, 1250), (1000, 1025)]