21782940

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{8443}}^1$

素因数の和:8498

約数の個数: 48

約数和(自身を含む): 62418048

約数和(自身を除く): 40635108

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 43, 60, 86, 129, 172, 215, 258, 430, 516, 645, 860, 1290, 2580, 8443, 16886, 25329, 33772, 42215, 50658, 84430, 101316, 126645, 168860, 253290, 363049, 506580, 726098, 1089147, 1452196, 1815245, 2178294, 3630490, 4356588, 5445735, 7260980, 10891470, 21782940]

約数ペア:

[(1, 21782940), (2, 10891470), (3, 7260980), (4, 5445735), (5, 4356588), (6, 3630490), (10, 2178294), (12, 1815245), (15, 1452196), (20, 1089147), (30, 726098), (43, 506580), (60, 363049), (86, 253290), (129, 168860), (172, 126645), (215, 101316), (258, 84430), (430, 50658), (516, 42215), (645, 33772), (860, 25329), (1290, 16886), (2580, 8443)]