18666564

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{359}}^1\times {\mathrm{619}}^1$

素因数の和:992

約数の個数: 48

約数和(自身を含む): 49996800

約数和(自身を除く): 31330236

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 359, 619, 718, 1077, 1238, 1436, 1857, 2154, 2476, 2513, 3714, 4308, 4333, 5026, 7428, 7539, 8666, 10052, 12999, 15078, 17332, 25998, 30156, 51996, 222221, 444442, 666663, 888884, 1333326, 1555547, 2666652, 3111094, 4666641, 6222188, 9333282, 18666564]

約数ペア:

[(1, 18666564), (2, 9333282), (3, 6222188), (4, 4666641), (6, 3111094), (7, 2666652), (12, 1555547), (14, 1333326), (21, 888884), (28, 666663), (42, 444442), (84, 222221), (359, 51996), (619, 30156), (718, 25998), (1077, 17332), (1238, 15078), (1436, 12999), (1857, 10052), (2154, 8666), (2476, 7539), (2513, 7428), (3714, 5026), (4308, 4333)]