20895660

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{4003}}^1$

素因数の和:4047

約数の個数: 72

約数和(自身を含む): 65585520

約数和(自身を除く): 44689860

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 29, 30, 36, 45, 58, 60, 87, 90, 116, 145, 174, 180, 261, 290, 348, 435, 522, 580, 870, 1044, 1305, 1740, 2610, 4003, 5220, 8006, 12009, 16012, 20015, 24018, 36027, 40030, 48036, 60045, 72054, 80060, 116087, 120090, 144108, 180135, 232174, 240180, 348261, 360270, 464348, 580435, 696522, 720540, 1044783, 1160870, 1393044, 1741305, 2089566, 2321740, 3482610, 4179132, 5223915, 6965220, 10447830, 20895660]

約数ペア:

[(1, 20895660), (2, 10447830), (3, 6965220), (4, 5223915), (5, 4179132), (6, 3482610), (9, 2321740), (10, 2089566), (12, 1741305), (15, 1393044), (18, 1160870), (20, 1044783), (29, 720540), (30, 696522), (36, 580435), (45, 464348), (58, 360270), (60, 348261), (87, 240180), (90, 232174), (116, 180135), (145, 144108), (174, 120090), (180, 116087), (261, 80060), (290, 72054), (348, 60045), (435, 48036), (522, 40030), (580, 36027), (870, 24018), (1044, 20015), (1305, 16012), (1740, 12009), (2610, 8006), (4003, 5220)]