20487714

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{229}}^1$

素因数の和:315

約数の個数: 64

約数和(自身を含む): 46986240

約数和(自身を除く): 26498526

約数列:

[1, 2, 3, 6, 13, 26, 31, 37, 39, 62, 74, 78, 93, 111, 186, 222, 229, 403, 458, 481, 687, 806, 962, 1147, 1209, 1374, 1443, 2294, 2418, 2886, 2977, 3441, 5954, 6882, 7099, 8473, 8931, 14198, 14911, 16946, 17862, 21297, 25419, 29822, 42594, 44733, 50838, 89466, 92287, 110149, 184574, 220298, 262663, 276861, 330447, 525326, 553722, 660894, 787989, 1575978, 3414619, 6829238, 10243857, 20487714]

約数ペア:

[(1, 20487714), (2, 10243857), (3, 6829238), (6, 3414619), (13, 1575978), (26, 787989), (31, 660894), (37, 553722), (39, 525326), (62, 330447), (74, 276861), (78, 262663), (93, 220298), (111, 184574), (186, 110149), (222, 92287), (229, 89466), (403, 50838), (458, 44733), (481, 42594), (687, 29822), (806, 25419), (962, 21297), (1147, 17862), (1209, 16946), (1374, 14911), (1443, 14198), (2294, 8931), (2418, 8473), (2886, 7099), (2977, 6882), (3441, 5954)]