21521920

素因数分解:

$2^9\times 5^1\times 7^1\times {\mathrm{1201}}^1$

素因数の和:1231

約数の個数: 80

約数和(自身を含む): 59023008

約数和(自身を除く): 37501088

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 112, 128, 140, 160, 224, 256, 280, 320, 448, 512, 560, 640, 896, 1120, 1201, 1280, 1792, 2240, 2402, 2560, 3584, 4480, 4804, 6005, 8407, 8960, 9608, 12010, 16814, 17920, 19216, 24020, 33628, 38432, 42035, 48040, 67256, 76864, 84070, 96080, 134512, 153728, 168140, 192160, 269024, 307456, 336280, 384320, 538048, 614912, 672560, 768640, 1076096, 1345120, 1537280, 2152192, 2690240, 3074560, 4304384, 5380480, 10760960, 21521920]

約数ペア:

[(1, 21521920), (2, 10760960), (4, 5380480), (5, 4304384), (7, 3074560), (8, 2690240), (10, 2152192), (14, 1537280), (16, 1345120), (20, 1076096), (28, 768640), (32, 672560), (35, 614912), (40, 538048), (56, 384320), (64, 336280), (70, 307456), (80, 269024), (112, 192160), (128, 168140), (140, 153728), (160, 134512), (224, 96080), (256, 84070), (280, 76864), (320, 67256), (448, 48040), (512, 42035), (560, 38432), (640, 33628), (896, 24020), (1120, 19216), (1201, 17920), (1280, 16814), (1792, 12010), (2240, 9608), (2402, 8960), (2560, 8407), (3584, 6005), (4480, 4804)]