18478740

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{43997}}^1$

素因数の和:44016

約数の個数: 48

約数和(自身を含む): 59133312

約数和(自身を除く): 40654572

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 43997, 87994, 131991, 175988, 219985, 263982, 307979, 439970, 527964, 615958, 659955, 879940, 923937, 1231916, 1319910, 1539895, 1847874, 2639820, 3079790, 3695748, 4619685, 6159580, 9239370, 18478740]

約数ペア:

[(1, 18478740), (2, 9239370), (3, 6159580), (4, 4619685), (5, 3695748), (6, 3079790), (7, 2639820), (10, 1847874), (12, 1539895), (14, 1319910), (15, 1231916), (20, 923937), (21, 879940), (28, 659955), (30, 615958), (35, 527964), (42, 439970), (60, 307979), (70, 263982), (84, 219985), (105, 175988), (140, 131991), (210, 87994), (420, 43997)]