128936220

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{306991}}^1$

素因数の和:307010

約数の個数: 48

約数和(自身を含む): 412597248

約数和(自身を除く): 283661028

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, 306991, 613982, 920973, 1227964, 1534955, 1841946, 2148937, 3069910, 3683892, 4297874, 4604865, 6139820, 6446811, 8595748, 9209730, 10744685, 12893622, 18419460, 21489370, 25787244, 32234055, 42978740, 64468110, 128936220]

約数ペア:

[(1, 128936220), (2, 64468110), (3, 42978740), (4, 32234055), (5, 25787244), (6, 21489370), (7, 18419460), (10, 12893622), (12, 10744685), (14, 9209730), (15, 8595748), (20, 6446811), (21, 6139820), (28, 4604865), (30, 4297874), (35, 3683892), (42, 3069910), (60, 2148937), (70, 1841946), (84, 1534955), (105, 1227964), (140, 920973), (210, 613982), (420, 306991)]