1388722020

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{3306481}}^1$

素因数の和:3306500

約数の個数: 48

約数和(自身を含む): 4443911808

約数和(自身を除く): 3055189788

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, 3306481, 6612962, 9919443, 13225924, 16532405, 19838886, 23145367, 33064810, 39677772, 46290734, 49597215, 66129620, 69436101, 92581468, 99194430, 115726835, 138872202, 198388860, 231453670, 277744404, 347180505, 462907340, 694361010, 1388722020]

約数ペア:

[(1, 1388722020), (2, 694361010), (3, 462907340), (4, 347180505), (5, 277744404), (6, 231453670), (7, 198388860), (10, 138872202), (12, 115726835), (14, 99194430), (15, 92581468), (20, 69436101), (21, 66129620), (28, 49597215), (30, 46290734), (35, 39677772), (42, 33064810), (60, 23145367), (70, 19838886), (84, 16532405), (105, 13225924), (140, 9919443), (210, 6612962), (420, 3306481)]