20004400

素因数分解:

$2^4\times 5^2\times {\mathrm{13}}^1\times {\mathrm{3847}}^1$

素因数の和:3878

約数の個数: 60

約数和(自身を含む): 51770992

約数和(自身を除く): 31766592

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 40, 50, 52, 65, 80, 100, 104, 130, 200, 208, 260, 325, 400, 520, 650, 1040, 1300, 2600, 3847, 5200, 7694, 15388, 19235, 30776, 38470, 50011, 61552, 76940, 96175, 100022, 153880, 192350, 200044, 250055, 307760, 384700, 400088, 500110, 769400, 800176, 1000220, 1250275, 1538800, 2000440, 2500550, 4000880, 5001100, 10002200, 20004400]

約数ペア:

[(1, 20004400), (2, 10002200), (4, 5001100), (5, 4000880), (8, 2500550), (10, 2000440), (13, 1538800), (16, 1250275), (20, 1000220), (25, 800176), (26, 769400), (40, 500110), (50, 400088), (52, 384700), (65, 307760), (80, 250055), (100, 200044), (104, 192350), (130, 153880), (200, 100022), (208, 96175), (260, 76940), (325, 61552), (400, 50011), (520, 38470), (650, 30776), (1040, 19235), (1300, 15388), (2600, 7694), (3847, 5200)]