18684568

素因数分解:

$2^3\times 7^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{229}}^1$

素因数の和:320

約数の個数: 64

約数和(自身を含む): 42393600

約数和(自身を除く): 23709032

約数列:

[1, 2, 4, 7, 8, 14, 28, 31, 47, 56, 62, 94, 124, 188, 217, 229, 248, 329, 376, 434, 458, 658, 868, 916, 1316, 1457, 1603, 1736, 1832, 2632, 2914, 3206, 5828, 6412, 7099, 10199, 10763, 11656, 12824, 14198, 20398, 21526, 28396, 40796, 43052, 49693, 56792, 75341, 81592, 86104, 99386, 150682, 198772, 301364, 333653, 397544, 602728, 667306, 1334612, 2335571, 2669224, 4671142, 9342284, 18684568]

約数ペア:

[(1, 18684568), (2, 9342284), (4, 4671142), (7, 2669224), (8, 2335571), (14, 1334612), (28, 667306), (31, 602728), (47, 397544), (56, 333653), (62, 301364), (94, 198772), (124, 150682), (188, 99386), (217, 86104), (229, 81592), (248, 75341), (329, 56792), (376, 49693), (434, 43052), (458, 40796), (658, 28396), (868, 21526), (916, 20398), (1316, 14198), (1457, 12824), (1603, 11656), (1736, 10763), (1832, 10199), (2632, 7099), (2914, 6412), (3206, 5828)]