18121840

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{20593}}^1$

素因数の和:20617

約数の個数: 40

約数和(自身を含む): 45965808

約数和(自身を除く): 27843968

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 20593, 41186, 82372, 102965, 164744, 205930, 226523, 329488, 411860, 453046, 823720, 906092, 1132615, 1647440, 1812184, 2265230, 3624368, 4530460, 9060920, 18121840]

約数ペア:

[(1, 18121840), (2, 9060920), (4, 4530460), (5, 3624368), (8, 2265230), (10, 1812184), (11, 1647440), (16, 1132615), (20, 906092), (22, 823720), (40, 453046), (44, 411860), (55, 329488), (80, 226523), (88, 205930), (110, 164744), (176, 102965), (220, 82372), (440, 41186), (880, 20593)]