128747220

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{306541}}^1$

素因数の和:306560

約数の個数: 48

約数和(自身を含む): 411992448

約数和(自身を除く): 283245228

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, 306541, 613082, 919623, 1226164, 1532705, 1839246, 2145787, 3065410, 3678492, 4291574, 4598115, 6130820, 6437361, 8583148, 9196230, 10728935, 12874722, 18392460, 21457870, 25749444, 32186805, 42915740, 64373610, 128747220]

約数ペア:

[(1, 128747220), (2, 64373610), (3, 42915740), (4, 32186805), (5, 25749444), (6, 21457870), (7, 18392460), (10, 12874722), (12, 10728935), (14, 9196230), (15, 8583148), (20, 6437361), (21, 6130820), (28, 4598115), (30, 4291574), (35, 3678492), (42, 3065410), (60, 2145787), (70, 1839246), (84, 1532705), (105, 1226164), (140, 919623), (210, 613082), (420, 306541)]