21540680

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{4049}}^1$

素因数の和:4086

約数の個数: 64

約数和(自身を含む): 58320000

約数和(自身を除く): 36779320

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 19, 20, 28, 35, 38, 40, 56, 70, 76, 95, 133, 140, 152, 190, 266, 280, 380, 532, 665, 760, 1064, 1330, 2660, 4049, 5320, 8098, 16196, 20245, 28343, 32392, 40490, 56686, 76931, 80980, 113372, 141715, 153862, 161960, 226744, 283430, 307724, 384655, 538517, 566860, 615448, 769310, 1077034, 1133720, 1538620, 2154068, 2692585, 3077240, 4308136, 5385170, 10770340, 21540680]

約数ペア:

[(1, 21540680), (2, 10770340), (4, 5385170), (5, 4308136), (7, 3077240), (8, 2692585), (10, 2154068), (14, 1538620), (19, 1133720), (20, 1077034), (28, 769310), (35, 615448), (38, 566860), (40, 538517), (56, 384655), (70, 307724), (76, 283430), (95, 226744), (133, 161960), (140, 153862), (152, 141715), (190, 113372), (266, 80980), (280, 76931), (380, 56686), (532, 40490), (665, 32392), (760, 28343), (1064, 20245), (1330, 16196), (2660, 8098), (4049, 5320)]