21539840

素因数分解:

$2^{10}\times 5^1\times 7^1\times {\mathrm{601}}^1$

素因数の和:633

約数の個数: 88

約数和(自身を含む): 59150112

約数和(自身を除く): 37610272

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, 601, 640, 896, 1024, 1120, 1202, 1280, 1792, 2240, 2404, 2560, 3005, 3584, 4207, 4480, 4808, 5120, 6010, 7168, 8414, 8960, 9616, 12020, 16828, 17920, 19232, 21035, 24040, 33656, 35840, 38464, 42070, 48080, 67312, 76928, 84140, 96160, 134624, 153856, 168280, 192320, 269248, 307712, 336560, 384640, 538496, 615424, 673120, 769280, 1076992, 1346240, 1538560, 2153984, 2692480, 3077120, 4307968, 5384960, 10769920, 21539840]

約数ペア:

[(1, 21539840), (2, 10769920), (4, 5384960), (5, 4307968), (7, 3077120), (8, 2692480), (10, 2153984), (14, 1538560), (16, 1346240), (20, 1076992), (28, 769280), (32, 673120), (35, 615424), (40, 538496), (56, 384640), (64, 336560), (70, 307712), (80, 269248), (112, 192320), (128, 168280), (140, 153856), (160, 134624), (224, 96160), (256, 84140), (280, 76928), (320, 67312), (448, 48080), (512, 42070), (560, 38464), (601, 35840), (640, 33656), (896, 24040), (1024, 21035), (1120, 19232), (1202, 17920), (1280, 16828), (1792, 12020), (2240, 9616), (2404, 8960), (2560, 8414), (3005, 7168), (3584, 6010), (4207, 5120), (4480, 4808)]