18703720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{997}}^1$

素因数の和:1082

約数の個数: 64

約数和(自身を含む): 48862080

約数和(自身を除く): 30158360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 67, 70, 134, 140, 268, 280, 335, 469, 536, 670, 938, 997, 1340, 1876, 1994, 2345, 2680, 3752, 3988, 4690, 4985, 6979, 7976, 9380, 9970, 13958, 18760, 19940, 27916, 34895, 39880, 55832, 66799, 69790, 133598, 139580, 267196, 279160, 333995, 467593, 534392, 667990, 935186, 1335980, 1870372, 2337965, 2671960, 3740744, 4675930, 9351860, 18703720]

約数ペア:

[(1, 18703720), (2, 9351860), (4, 4675930), (5, 3740744), (7, 2671960), (8, 2337965), (10, 1870372), (14, 1335980), (20, 935186), (28, 667990), (35, 534392), (40, 467593), (56, 333995), (67, 279160), (70, 267196), (134, 139580), (140, 133598), (268, 69790), (280, 66799), (335, 55832), (469, 39880), (536, 34895), (670, 27916), (938, 19940), (997, 18760), (1340, 13958), (1876, 9970), (1994, 9380), (2345, 7976), (2680, 6979), (3752, 4985), (3988, 4690)]