25062500

素因数分解:

$2^2\times 5^6\times {\mathrm{401}}^1$

素因数の和:435

約数の個数: 42

約数和(自身を含む): 54960234

約数和(自身を除く): 29897734

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 250, 401, 500, 625, 802, 1250, 1604, 2005, 2500, 3125, 4010, 6250, 8020, 10025, 12500, 15625, 20050, 31250, 40100, 50125, 62500, 100250, 200500, 250625, 501250, 1002500, 1253125, 2506250, 5012500, 6265625, 12531250, 25062500]

約数ペア:

[(1, 25062500), (2, 12531250), (4, 6265625), (5, 5012500), (10, 2506250), (20, 1253125), (25, 1002500), (50, 501250), (100, 250625), (125, 200500), (250, 100250), (401, 62500), (500, 50125), (625, 40100), (802, 31250), (1250, 20050), (1604, 15625), (2005, 12500), (2500, 10025), (3125, 8020), (4010, 6250)]