21270080

素因数分解:

$2^6\times 5^1\times {\mathrm{13}}^1\times {\mathrm{5113}}^1$

素因数の和:5143

約数の個数: 56

約数和(自身を含む): 54556152

約数和(自身を除く): 33286072

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 130, 160, 208, 260, 320, 416, 520, 832, 1040, 2080, 4160, 5113, 10226, 20452, 25565, 40904, 51130, 66469, 81808, 102260, 132938, 163616, 204520, 265876, 327232, 332345, 409040, 531752, 664690, 818080, 1063504, 1329380, 1636160, 2127008, 2658760, 4254016, 5317520, 10635040, 21270080]

約数ペア:

[(1, 21270080), (2, 10635040), (4, 5317520), (5, 4254016), (8, 2658760), (10, 2127008), (13, 1636160), (16, 1329380), (20, 1063504), (26, 818080), (32, 664690), (40, 531752), (52, 409040), (64, 332345), (65, 327232), (80, 265876), (104, 204520), (130, 163616), (160, 132938), (208, 102260), (260, 81808), (320, 66469), (416, 51130), (520, 40904), (832, 25565), (1040, 20452), (2080, 10226), (4160, 5113)]