20317980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{11677}}^1$

素因数の和:11718

約数の個数: 48

約数和(自身を含む): 58857120

約数和(自身を除く): 38539140

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 29, 30, 58, 60, 87, 116, 145, 174, 290, 348, 435, 580, 870, 1740, 11677, 23354, 35031, 46708, 58385, 70062, 116770, 140124, 175155, 233540, 338633, 350310, 677266, 700620, 1015899, 1354532, 1693165, 2031798, 3386330, 4063596, 5079495, 6772660, 10158990, 20317980]

約数ペア:

[(1, 20317980), (2, 10158990), (3, 6772660), (4, 5079495), (5, 4063596), (6, 3386330), (10, 2031798), (12, 1693165), (15, 1354532), (20, 1015899), (29, 700620), (30, 677266), (58, 350310), (60, 338633), (87, 233540), (116, 175155), (145, 140124), (174, 116770), (290, 70062), (348, 58385), (435, 46708), (580, 35031), (870, 23354), (1740, 11677)]