19783720

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{44963}}^1$

素因数の和:44985

約数の個数: 32

約数和(自身を含む): 48561120

約数和(自身を除く): 28777400

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 44963, 89926, 179852, 224815, 359704, 449630, 494593, 899260, 989186, 1798520, 1978372, 2472965, 3956744, 4945930, 9891860, 19783720]

約数ペア:

[(1, 19783720), (2, 9891860), (4, 4945930), (5, 3956744), (8, 2472965), (10, 1978372), (11, 1798520), (20, 989186), (22, 899260), (40, 494593), (44, 449630), (55, 359704), (88, 224815), (110, 179852), (220, 89926), (440, 44963)]