21099408

素因数分解:

$2^4\times 3^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{449}}^1$

素因数の和:560

約数の個数: 80

約数和(自身を含む): 60264000

約数和(自身を除く): 39164592

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, 449, 528, 534, 712, 898, 979, 1068, 1347, 1424, 1796, 1958, 2136, 2694, 2937, 3592, 3916, 4272, 4939, 5388, 5874, 7184, 7832, 9878, 10776, 11748, 14817, 15664, 19756, 21552, 23496, 29634, 39512, 39961, 46992, 59268, 79024, 79922, 118536, 119883, 159844, 237072, 239766, 319688, 439571, 479532, 639376, 879142, 959064, 1318713, 1758284, 1918128, 2637426, 3516568, 5274852, 7033136, 10549704, 21099408]

約数ペア:

[(1, 21099408), (2, 10549704), (3, 7033136), (4, 5274852), (6, 3516568), (8, 2637426), (11, 1918128), (12, 1758284), (16, 1318713), (22, 959064), (24, 879142), (33, 639376), (44, 479532), (48, 439571), (66, 319688), (88, 239766), (89, 237072), (132, 159844), (176, 119883), (178, 118536), (264, 79922), (267, 79024), (356, 59268), (449, 46992), (528, 39961), (534, 39512), (712, 29634), (898, 23496), (979, 21552), (1068, 19756), (1347, 15664), (1424, 14817), (1796, 11748), (1958, 10776), (2136, 9878), (2694, 7832), (2937, 7184), (3592, 5874), (3916, 5388), (4272, 4939)]