18118240

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{2311}}^1$

素因数の和:2340

約数の個数: 72

約数和(自身を含む): 49814352

約数和(自身を除く): 31696112

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 70, 80, 98, 112, 140, 160, 196, 224, 245, 280, 392, 490, 560, 784, 980, 1120, 1568, 1960, 2311, 3920, 4622, 7840, 9244, 11555, 16177, 18488, 23110, 32354, 36976, 46220, 64708, 73952, 80885, 92440, 113239, 129416, 161770, 184880, 226478, 258832, 323540, 369760, 452956, 517664, 566195, 647080, 905912, 1132390, 1294160, 1811824, 2264780, 2588320, 3623648, 4529560, 9059120, 18118240]

約数ペア:

[(1, 18118240), (2, 9059120), (4, 4529560), (5, 3623648), (7, 2588320), (8, 2264780), (10, 1811824), (14, 1294160), (16, 1132390), (20, 905912), (28, 647080), (32, 566195), (35, 517664), (40, 452956), (49, 369760), (56, 323540), (70, 258832), (80, 226478), (98, 184880), (112, 161770), (140, 129416), (160, 113239), (196, 92440), (224, 80885), (245, 73952), (280, 64708), (392, 46220), (490, 36976), (560, 32354), (784, 23110), (980, 18488), (1120, 16177), (1568, 11555), (1960, 9244), (2311, 7840), (3920, 4622)]