20735288

素因数分解:

$2^3\times 7^1\times {\mathrm{43}}^1\times {\mathrm{79}}^1\times {\mathrm{109}}^1$

素因数の和:244

約数の個数: 64

約数和(自身を含む): 46464000

約数和(自身を除く): 25728712

約数列:

[1, 2, 4, 7, 8, 14, 28, 43, 56, 79, 86, 109, 158, 172, 218, 301, 316, 344, 436, 553, 602, 632, 763, 872, 1106, 1204, 1526, 2212, 2408, 3052, 3397, 4424, 4687, 6104, 6794, 8611, 9374, 13588, 17222, 18748, 23779, 27176, 32809, 34444, 37496, 47558, 60277, 65618, 68888, 95116, 120554, 131236, 190232, 241108, 262472, 370273, 482216, 740546, 1481092, 2591911, 2962184, 5183822, 10367644, 20735288]

約数ペア:

[(1, 20735288), (2, 10367644), (4, 5183822), (7, 2962184), (8, 2591911), (14, 1481092), (28, 740546), (43, 482216), (56, 370273), (79, 262472), (86, 241108), (109, 190232), (158, 131236), (172, 120554), (218, 95116), (301, 68888), (316, 65618), (344, 60277), (436, 47558), (553, 37496), (602, 34444), (632, 32809), (763, 27176), (872, 23779), (1106, 18748), (1204, 17222), (1526, 13588), (2212, 9374), (2408, 8611), (3052, 6794), (3397, 6104), (4424, 4687)]