18858140

素因数分解:

$2^2\times 5^1\times 7^3\times {\mathrm{2749}}^1$

素因数の和:2779

約数の個数: 48

約数和(自身を含む): 46200000

約数和(自身を除く): 27341860

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 343, 490, 686, 980, 1372, 1715, 2749, 3430, 5498, 6860, 10996, 13745, 19243, 27490, 38486, 54980, 76972, 96215, 134701, 192430, 269402, 384860, 538804, 673505, 942907, 1347010, 1885814, 2694020, 3771628, 4714535, 9429070, 18858140]

約数ペア:

[(1, 18858140), (2, 9429070), (4, 4714535), (5, 3771628), (7, 2694020), (10, 1885814), (14, 1347010), (20, 942907), (28, 673505), (35, 538804), (49, 384860), (70, 269402), (98, 192430), (140, 134701), (196, 96215), (245, 76972), (343, 54980), (490, 38486), (686, 27490), (980, 19243), (1372, 13745), (1715, 10996), (2749, 6860), (3430, 5498)]