18359740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{199}}^1\times {\mathrm{659}}^1$

素因数の和:874

約数の個数: 48

約数和(自身を含む): 44352000

約数和(自身を除く): 25992260

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 199, 398, 659, 796, 995, 1318, 1393, 1990, 2636, 2786, 3295, 3980, 4613, 5572, 6590, 6965, 9226, 13180, 13930, 18452, 23065, 27860, 46130, 92260, 131141, 262282, 524564, 655705, 917987, 1311410, 1835974, 2622820, 3671948, 4589935, 9179870, 18359740]

約数ペア:

[(1, 18359740), (2, 9179870), (4, 4589935), (5, 3671948), (7, 2622820), (10, 1835974), (14, 1311410), (20, 917987), (28, 655705), (35, 524564), (70, 262282), (140, 131141), (199, 92260), (398, 46130), (659, 27860), (796, 23065), (995, 18452), (1318, 13930), (1393, 13180), (1990, 9226), (2636, 6965), (2786, 6590), (3295, 5572), (3980, 4613)]