20800640

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{4643}}^1$

素因数の和:4669

約数の個数: 64

約数和(自身を含む): 56842560

約数和(自身を除く): 36041920

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, 280, 320, 448, 560, 640, 896, 1120, 2240, 4480, 4643, 9286, 18572, 23215, 32501, 37144, 46430, 65002, 74288, 92860, 130004, 148576, 162505, 185720, 260008, 297152, 325010, 371440, 520016, 594304, 650020, 742880, 1040032, 1300040, 1485760, 2080064, 2600080, 2971520, 4160128, 5200160, 10400320, 20800640]

約数ペア:

[(1, 20800640), (2, 10400320), (4, 5200160), (5, 4160128), (7, 2971520), (8, 2600080), (10, 2080064), (14, 1485760), (16, 1300040), (20, 1040032), (28, 742880), (32, 650020), (35, 594304), (40, 520016), (56, 371440), (64, 325010), (70, 297152), (80, 260008), (112, 185720), (128, 162505), (140, 148576), (160, 130004), (224, 92860), (280, 74288), (320, 65002), (448, 46430), (560, 37144), (640, 32501), (896, 23215), (1120, 18572), (2240, 9286), (4480, 4643)]