18981720

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{52727}}^1$

素因数の和:52744

約数の個数: 48

約数和(自身を含む): 61691760

約数和(自身を除く): 42710040

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, 52727, 105454, 158181, 210908, 263635, 316362, 421816, 474543, 527270, 632724, 790905, 949086, 1054540, 1265448, 1581810, 1898172, 2109080, 2372715, 3163620, 3796344, 4745430, 6327240, 9490860, 18981720]

約数ペア:

[(1, 18981720), (2, 9490860), (3, 6327240), (4, 4745430), (5, 3796344), (6, 3163620), (8, 2372715), (9, 2109080), (10, 1898172), (12, 1581810), (15, 1265448), (18, 1054540), (20, 949086), (24, 790905), (30, 632724), (36, 527270), (40, 474543), (45, 421816), (60, 316362), (72, 263635), (90, 210908), (120, 158181), (180, 105454), (360, 52727)]