19817640

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{55049}}^1$

素因数の和:55066

約数の個数: 48

約数和(自身を含む): 64408500

約数和(自身を除く): 44590860

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 45, 60, 72, 90, 120, 180, 360, 55049, 110098, 165147, 220196, 275245, 330294, 440392, 495441, 550490, 660588, 825735, 990882, 1100980, 1321176, 1651470, 1981764, 2201960, 2477205, 3302940, 3963528, 4954410, 6605880, 9908820, 19817640]

約数ペア:

[(1, 19817640), (2, 9908820), (3, 6605880), (4, 4954410), (5, 3963528), (6, 3302940), (8, 2477205), (9, 2201960), (10, 1981764), (12, 1651470), (15, 1321176), (18, 1100980), (20, 990882), (24, 825735), (30, 660588), (36, 550490), (40, 495441), (45, 440392), (60, 330294), (72, 275245), (90, 220196), (120, 165147), (180, 110098), (360, 55049)]