20817456

素因数分解:

$2^4\times 3^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{443}}^1$

素因数の和:554

約数の個数: 80

約数和(自身を含む): 59460480

約数和(自身を除く): 38643024

約数列:

[1, 2, 3, 4, 6, 8, 11, 12, 16, 22, 24, 33, 44, 48, 66, 88, 89, 132, 176, 178, 264, 267, 356, 443, 528, 534, 712, 886, 979, 1068, 1329, 1424, 1772, 1958, 2136, 2658, 2937, 3544, 3916, 4272, 4873, 5316, 5874, 7088, 7832, 9746, 10632, 11748, 14619, 15664, 19492, 21264, 23496, 29238, 38984, 39427, 46992, 58476, 77968, 78854, 116952, 118281, 157708, 233904, 236562, 315416, 433697, 473124, 630832, 867394, 946248, 1301091, 1734788, 1892496, 2602182, 3469576, 5204364, 6939152, 10408728, 20817456]

約数ペア:

[(1, 20817456), (2, 10408728), (3, 6939152), (4, 5204364), (6, 3469576), (8, 2602182), (11, 1892496), (12, 1734788), (16, 1301091), (22, 946248), (24, 867394), (33, 630832), (44, 473124), (48, 433697), (66, 315416), (88, 236562), (89, 233904), (132, 157708), (176, 118281), (178, 116952), (264, 78854), (267, 77968), (356, 58476), (443, 46992), (528, 39427), (534, 38984), (712, 29238), (886, 23496), (979, 21264), (1068, 19492), (1329, 15664), (1424, 14619), (1772, 11748), (1958, 10632), (2136, 9746), (2658, 7832), (2937, 7088), (3544, 5874), (3916, 5316), (4272, 4873)]