19876000

素因数分解:

$2^5\times 5^3\times {\mathrm{4969}}^1$

素因数の和:4994

約数の個数: 48

約数和(自身を含む): 48845160

約数和(自身を除く): 28969160

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 125, 160, 200, 250, 400, 500, 800, 1000, 2000, 4000, 4969, 9938, 19876, 24845, 39752, 49690, 79504, 99380, 124225, 159008, 198760, 248450, 397520, 496900, 621125, 795040, 993800, 1242250, 1987600, 2484500, 3975200, 4969000, 9938000, 19876000]

約数ペア:

[(1, 19876000), (2, 9938000), (4, 4969000), (5, 3975200), (8, 2484500), (10, 1987600), (16, 1242250), (20, 993800), (25, 795040), (32, 621125), (40, 496900), (50, 397520), (80, 248450), (100, 198760), (125, 159008), (160, 124225), (200, 99380), (250, 79504), (400, 49690), (500, 39752), (800, 24845), (1000, 19876), (2000, 9938), (4000, 4969)]