21969920

素因数分解:

$2^{10}\times 5^1\times 7^1\times {\mathrm{613}}^1$

素因数の和:645

約数の個数: 88

約数和(自身を含む): 60329184

約数和(自身を除く): 38359264

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, 613, 640, 896, 1024, 1120, 1226, 1280, 1792, 2240, 2452, 2560, 3065, 3584, 4291, 4480, 4904, 5120, 6130, 7168, 8582, 8960, 9808, 12260, 17164, 17920, 19616, 21455, 24520, 34328, 35840, 39232, 42910, 49040, 68656, 78464, 85820, 98080, 137312, 156928, 171640, 196160, 274624, 313856, 343280, 392320, 549248, 627712, 686560, 784640, 1098496, 1373120, 1569280, 2196992, 2746240, 3138560, 4393984, 5492480, 10984960, 21969920]

約数ペア:

[(1, 21969920), (2, 10984960), (4, 5492480), (5, 4393984), (7, 3138560), (8, 2746240), (10, 2196992), (14, 1569280), (16, 1373120), (20, 1098496), (28, 784640), (32, 686560), (35, 627712), (40, 549248), (56, 392320), (64, 343280), (70, 313856), (80, 274624), (112, 196160), (128, 171640), (140, 156928), (160, 137312), (224, 98080), (256, 85820), (280, 78464), (320, 68656), (448, 49040), (512, 42910), (560, 39232), (613, 35840), (640, 34328), (896, 24520), (1024, 21455), (1120, 19616), (1226, 17920), (1280, 17164), (1792, 12260), (2240, 9808), (2452, 8960), (2560, 8582), (3065, 7168), (3584, 6130), (4291, 5120), (4480, 4904)]