18240740

素因数分解:

$2^2\times 5^1\times 7^3\times {\mathrm{2659}}^1$

素因数の和:2689

約数の個数: 48

約数和(自身を含む): 44688000

約数和(自身を除く): 26447260

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, 2659, 3430, 5318, 6860, 10636, 13295, 18613, 26590, 37226, 53180, 74452, 93065, 130291, 186130, 260582, 372260, 521164, 651455, 912037, 1302910, 1824074, 2605820, 3648148, 4560185, 9120370, 18240740]

約数ペア:

[(1, 18240740), (2, 9120370), (4, 4560185), (5, 3648148), (7, 2605820), (10, 1824074), (14, 1302910), (20, 912037), (28, 651455), (35, 521164), (49, 372260), (70, 260582), (98, 186130), (140, 130291), (196, 93065), (245, 74452), (343, 53180), (490, 37226), (686, 26590), (980, 18613), (1372, 13295), (1715, 10636), (2659, 6860), (3430, 5318)]